//
// "$Id: Fl_Help_View.cxx 6776 2009-04-22 09:02:13Z greg.ercolano $"
//
// Fl_Help_View widget routines.
//
// Copyright 1997-2009 by Easy Software Products.
// Image support by Matthias Melcher, Copyright 2000-2009.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems on the following page:
//
//     http://www.fltk.org/str.php
//
// Contents:
//
//   Fl_Help_View::add_block()       - Add a text block to the list.
//   Fl_Help_View::add_link()        - Add a new link to the list.
//   Fl_Help_View::add_target()      - Add a new target to the list.
//   Fl_Help_View::compare_targets() - Compare two targets.
//   Fl_Help_View::do_align()        - Compute the alignment for a line in
//                                     a block.
//   Fl_Help_View::draw()            - Draw the Fl_Help_View widget.
//   Fl_Help_View::format()          - Format the help text.
//   Fl_Help_View::format_table()    - Format a table...
//   Fl_Help_View::free_data()       - Free memory used for the document.
//   Fl_Help_View::get_align()       - Get an alignment attribute.
//   Fl_Help_View::get_attr()        - Get an attribute value from the string.
//   Fl_Help_View::get_color()       - Get an alignment attribute.
//   Fl_Help_View::handle()          - Handle events in the widget.
//   Fl_Help_View::Fl_Help_View()    - Build a Fl_Help_View widget.
//   Fl_Help_View::~Fl_Help_View()   - Destroy a Fl_Help_View widget.
//   Fl_Help_View::load()            - Load the specified file.
//   Fl_Help_View::resize()          - Resize the help widget.
//   Fl_Help_View::topline()         - Set the top line to the named target.
//   Fl_Help_View::topline()         - Set the top line by number.
//   Fl_Help_View::value()           - Set the help text directly.
//   scrollbar_callback()            - A callback for the scrollbar.
//

//
// Include necessary header files...
//

#include <FL/Fl_Help_View.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Pixmap.H>
#include <FL/x.H>
#include <stdio.h>
#include <stdlib.h>
#include <FL/fl_utf8.h>
#include <FL/filename.H>	// fl_open_uri()
#include "flstring.h"
#include <ctype.h>
#include <errno.h>
#include <math.h>

#if defined(WIN32) && ! defined(__CYGWIN__)
#  include <io.h>
#  include <direct.h>
#else
#  include <unistd.h>
#endif // WIN32

#define MAX_COLUMNS	200


//
// Typedef the C API sort function type the only way I know how...
//

extern "C"
{
    typedef int (*compare_func_t)(const void *, const void *);
}


//
// Local functions...
//

static int	quote_char(const char *);
static void	scrollbar_callback(Fl_Widget *s, void *);
static void	hscrollbar_callback(Fl_Widget *s, void *);

//
// global flag for image loading (see get_image).
//

static char initial_load = 0;

//
// Broken image...
//

static const char *broken_xpm[] =
{
    "16 24 4 1",
    "@ c #000000",
    "  c #ffffff",
    "+ c none",
    "x c #ff0000",
    // pixels
    "@@@@@@@+++++++++",
    "@    @++++++++++",
    "@   @+++++++++++",
    "@   @++@++++++++",
    "@    @@+++++++++",
    "@     @+++@+++++",
    "@     @++@@++++@",
    "@ xxx  @@  @++@@",
    "@  xxx    xx@@ @",
    "@   xxx  xxx   @",
    "@    xxxxxx    @",
    "@     xxxx     @",
    "@    xxxxxx    @",
    "@   xxx  xxx   @",
    "@  xxx    xxx  @",
    "@ xxx      xxx @",
    "@              @",
    "@              @",
    "@              @",
    "@              @",
    "@              @",
    "@              @",
    "@              @",
    "@@@@@@@@@@@@@@@@",
    NULL
};

static Fl_Pixmap broken_image(broken_xpm);

//
// Simple margin stack for Fl_Help_View::format()...
//

struct fl_margins
{
    int depth_;
    int margins_[100];

    fl_margins()
    {
        clear();
    }

    int clear()
    {
//    puts("fl_margins::clear()");

        depth_ = 0;
        return margins_[0] = 4;
    }

    int current()
    {
        return margins_[depth_];
    }

    int pop()
    {
//    printf("fl_margins::pop(): depth_=%d, xx=%d\n", depth_,
//           depth_ > 0 ? margins_[depth_ - 1] : 4);

        if (depth_ > 0)
        {
            depth_ --;
            return margins_[depth_];
        }
        else return 4;
    }

    int push(int indent)
    {
        int xx;

        xx = margins_[depth_] + indent;

//    printf("fl_margins::push(indent=%d): depth_=%d, xx=%d\n", indent,
//           depth_ + 1, xx);

        if (depth_ < 99)
        {
            depth_ ++;
            margins_[depth_] = xx;
        }

        return xx;
    }
};

//
// All the stuff needed to implement text selection in Fl_Help_View
//

/* matt:
 * We are trying to keep binary compatibility with previous versions
 * of FLTK. This means that we are limited to adding static variables
 * only to not enlarge the Fl_Help_View class. Lucky for us, only one
 * text can be selected system wide, so we can remember the selection
 * in a single set of variables.
 *
 * Still to do:
 * - &word; style characters mess up our count inside a word boundary
 * - we can only select words, no individual characters
 * - no dragging of the selection into another widget
 * - selection must be cleared if another widget get focus!
 * - write a comment for every new function
 */

/*
The following functions are also used to draw stuff and should be replaced with
local copies that are much faster when merely counting:

fl_color(Fl_Color);
fl_rectf(int, int, int, int);
fl_push_clip(int, int, int, int);
fl_xyline(int, int, int);
fl_rect()
fl_line()
img->draw()
*/

// We don't put the offscreen buffer in the help view class because
// we'd need to include x.H in the header...
static Fl_Offscreen fl_help_view_buffer;
int Fl_Help_View::selection_first = 0;
int Fl_Help_View::selection_last = 0;
int Fl_Help_View::selection_push_first = 0;
int Fl_Help_View::selection_push_last = 0;
int Fl_Help_View::selection_drag_first = 0;
int Fl_Help_View::selection_drag_last = 0;
int Fl_Help_View::selected = 0;
int Fl_Help_View::draw_mode = 0;
int Fl_Help_View::mouse_x = 0;
int Fl_Help_View::mouse_y = 0;
int Fl_Help_View::current_pos = 0;
Fl_Help_View *Fl_Help_View::current_view = 0L;
Fl_Color Fl_Help_View::hv_selection_color;
Fl_Color Fl_Help_View::hv_selection_text_color;

/*
 * Limitation: if a word contains &code; notations, we will calculate a wrong length.
 *
 * This function must be optimized for speed!
 */
void Fl_Help_View::hv_draw(const char *t, int x, int y)
{
    if (selected && current_view==this && current_pos<selection_last && current_pos>=selection_first)
    {
        Fl_Color c = fl_color();
        fl_color(hv_selection_color);
        int w = (int)fl_width(t);
        if (current_pos+(int)strlen(t)<selection_last)
            w += (int)fl_width(' ');
        fl_rectf(x, y+fl_descent()-fl_height(), w, fl_height());
        fl_color(hv_selection_text_color);
        fl_draw(t, x, y);
        fl_color(c);
    }
    else
    {
        fl_draw(t, x, y);
    }
    if (draw_mode)
    {
        int w = (int)fl_width(t);
        if (mouse_x>=x && mouse_x<x+w)
        {
            if (mouse_y>=y-fl_height()+fl_descent()&&mouse_y<=y+fl_descent())
            {
                int f = current_pos;
                int l = f+strlen(t); // use 'quote_char' to calculate the true length of the HTML string
                if (draw_mode==1)
                {
                    selection_push_first = f;
                    selection_push_last = l;
                }
                else
                {
                    selection_drag_first = f;
                    selection_drag_last = l;
                }
            }
        }
    }
}


/** Adds a text block to the list. */
Fl_Help_Block *					// O - Pointer to new block
Fl_Help_View::add_block(const char   *s,	// I - Pointer to start of block text
                        int           xx,	// I - X position of block
                        int           yy,	// I - Y position of block
                        int           ww,	// I - Right margin of block
                        int           hh,	// I - Height of block
                        unsigned char border)	// I - Draw border?
{
    Fl_Help_Block	*temp;				// New block


//  printf("add_block(s = %p, xx = %d, yy = %d, ww = %d, hh = %d, border = %d)\n",
//         s, xx, yy, ww, hh, border);

    if (nblocks_ >= ablocks_)
    {
        ablocks_ += 16;

        if (ablocks_ == 16)
            blocks_ = (Fl_Help_Block *)malloc(sizeof(Fl_Help_Block) * ablocks_);
        else
            blocks_ = (Fl_Help_Block *)realloc(blocks_, sizeof(Fl_Help_Block) * ablocks_);
    }

    temp = blocks_ + nblocks_;
    memset(temp, 0, sizeof(Fl_Help_Block));
    temp->start   = s;
    temp->end     = s;
    temp->x       = xx;
    temp->y       = yy;
    temp->w       = ww;
    temp->h       = hh;
    temp->border  = border;
    temp->bgcolor = bgcolor_;
    nblocks_ ++;

    return (temp);
}


/** Adds a new link to the list. */
void Fl_Help_View::add_link(const char *n,	// I - Name of link
                            int        xx,	// I - X position of link
                            int        yy,	// I - Y position of link
                            int        ww,	// I - Width of link text
                            int        hh)	// I - Height of link text
{
    Fl_Help_Link	*temp;			// New link
    char		*target;		// Pointer to target name


    if (nlinks_ >= alinks_)
    {
        alinks_ += 16;

        if (alinks_ == 16)
            links_ = (Fl_Help_Link *)malloc(sizeof(Fl_Help_Link) * alinks_);
        else
            links_ = (Fl_Help_Link *)realloc(links_, sizeof(Fl_Help_Link) * alinks_);
    }

    temp = links_ + nlinks_;

    temp->x       = xx;
    temp->y       = yy;
    temp->w       = xx + ww;
    temp->h       = yy + hh;

    strlcpy(temp->filename, n, sizeof(temp->filename));

    if ((target = strrchr(temp->filename, '#')) != NULL)
    {
        *target++ = '\0';
        strlcpy(temp->name, target, sizeof(temp->name));
    }
    else
        temp->name[0] = '\0';

    nlinks_ ++;
}


/** Adds a new target to the list. */
void Fl_Help_View::add_target(const char *n,	// I - Name of target
                              int        yy)	// I - Y position of target
{
    Fl_Help_Target	*temp;			// New target


    if (ntargets_ >= atargets_)
    {
        atargets_ += 16;

        if (atargets_ == 16)
            targets_ = (Fl_Help_Target *)malloc(sizeof(Fl_Help_Target) * atargets_);
        else
            targets_ = (Fl_Help_Target *)realloc(targets_, sizeof(Fl_Help_Target) * atargets_);
    }

    temp = targets_ + ntargets_;

    temp->y = yy;
    strlcpy(temp->name, n, sizeof(temp->name));

    ntargets_ ++;
}

/** Compares two targets.*/
int							// O - Result of comparison
Fl_Help_View::compare_targets(const Fl_Help_Target *t0,	// I - First target
                              const Fl_Help_Target *t1)	// I - Second target
{
    return (strcasecmp(t0->name, t1->name));
}

/** Computes the alignment for a line in a block.*/
int						// O - New line
Fl_Help_View::do_align(Fl_Help_Block *block,	// I - Block to add to
                       int          line,	// I - Current line
                       int          xx,		// I - Current X position
                       int          a,		// I - Current alignment
                       int          &l)		// IO - Starting link
{
    int	offset;					// Alignment offset


    switch (a)
    {
    case RIGHT :	// Right align
        offset = block->w - xx;
        break;
    case CENTER :	// Center
        offset = (block->w - xx) / 2;
        break;
    default :		// Left align
        offset = 0;
        break;
    }

    block->line[line] = block->x + offset;

    if (line < 31)
        line ++;

    while (l < nlinks_)
    {
        links_[l].x += offset;
        links_[l].w += offset;
        l ++;
    }

    return (line);
}

/** Draws the Fl_Help_View widget. */
void
Fl_Help_View::draw()
{
    int			i;		// Looping var
    const Fl_Help_Block	*block;		// Pointer to current block
    const char		*ptr,		// Pointer to text in block
    *attrs;		// Pointer to start of element attributes
    char			*s,		// Pointer into buffer
    buf[1024],	// Text buffer
    attr[1024];	// Attribute buffer
    int			xx, yy, ww, hh;	// Current positions and sizes
    int			line;		// Current line
    Fl_Font               font;
    Fl_Fontsize           fsize;          // Current font and size
    Fl_Color              fcolor;         // current font color
    int			head, pre,	// Flags for text
    needspace;	// Do we need whitespace?
    Fl_Boxtype		b = box() ? box() : FL_DOWN_BOX;
    // Box to draw...
    int			underline,	// Underline text?
    xtra_ww;        // Extra width for underlined space between words

    // Draw the scrollbar(s) and box first...
    ww = w();
    hh = h();
    i  = 0;

    draw_box(b, x(), y(), ww, hh, bgcolor_);

    if ( hscrollbar_.visible() || scrollbar_.visible() )
    {
        int scrollsize = scrollbar_size_ ? scrollbar_size_ : Fl::scrollbar_size();
        int hor_vis = hscrollbar_.visible();
        int ver_vis = scrollbar_.visible();
        // Scrollbar corner
        int scorn_x = x() + ww - (ver_vis?scrollsize:0) - Fl::box_dw(b) + Fl::box_dx(b);
        int scorn_y = y() + hh - (hor_vis?scrollsize:0) - Fl::box_dh(b) + Fl::box_dy(b);
        if ( hor_vis )
        {
            if ( hscrollbar_.h() != scrollsize )  		// scrollsize changed?
            {
                hscrollbar_.resize(x(), scorn_y, scorn_x - x(), scrollsize);
                init_sizes();
            }
            draw_child(hscrollbar_);
            hh -= scrollsize;
        }
        if ( ver_vis )
        {
            if ( scrollbar_.w() != scrollsize )  		// scrollsize changed?
            {
                scrollbar_.resize(scorn_x, y(), scrollsize, scorn_y - y());
                init_sizes();
            }
            draw_child(scrollbar_);
            ww -= scrollsize;
        }
        if ( hor_vis && ver_vis )
        {
            // Both scrollbars visible? Draw little gray box in corner
            fl_color(FL_GRAY);
            fl_rectf(scorn_x, scorn_y, scrollsize, scrollsize);
        }
    }

    if (!value_)
        return;

    if (current_view == this && selected)
    {
        hv_selection_color      = FL_SELECTION_COLOR;
        hv_selection_text_color = fl_contrast(textcolor_, FL_SELECTION_COLOR);
    }
    current_pos = 0;

    // Clip the drawing to the inside of the box...
    fl_push_clip(x() + Fl::box_dx(b), y() + Fl::box_dy(b),
                 ww - Fl::box_dw(b), hh - Fl::box_dh(b));
    fl_color(textcolor_);

    // Draw all visible blocks...
    for (i = 0, block = blocks_; i < nblocks_; i ++, block ++)
        if ((block->y + block->h) >= topline_ && block->y < (topline_ + h()))
        {
            line      = 0;
            xx        = block->line[line];
            yy        = block->y - topline_;
            hh        = 0;
            pre       = 0;
            head      = 0;
            needspace = 0;
            underline = 0;

            initfont(font, fsize, fcolor);

            for (ptr = block->start, s = buf; ptr < block->end;)
            {
                if ((*ptr == '<' || isspace((*ptr)&255)) && s > buf)
                {
                    if (!head && !pre)
                    {
                        // Check width...
                        *s = '\0';
                        s  = buf;
                        ww = (int)fl_width(buf);

                        if (needspace && xx > block->x)
                            xx += (int)fl_width(' ');

                        if ((xx + ww) > block->w)
                        {
                            if (line < 31)
                                line ++;
                            xx = block->line[line];
                            yy += hh;
                            hh = 0;
                        }

                        hv_draw(buf, xx + x() - leftline_, yy + y());
                        if (underline)
                        {
                            xtra_ww = isspace((*ptr)&255)?(int)fl_width(' '):0;
                            fl_xyline(xx + x() - leftline_, yy + y() + 1,
                                      xx + x() - leftline_ + ww + xtra_ww);
                        }
                        current_pos = ptr-value_;

                        xx += ww;
                        if ((fsize + 2) > hh)
                            hh = fsize + 2;

                        needspace = 0;
                    }
                    else if (pre)
                    {
                        while (isspace((*ptr)&255))
                        {
                            if (*ptr == '\n')
                            {
                                *s = '\0';
                                s = buf;

                                hv_draw(buf, xx + x() - leftline_, yy + y());
                                if (underline) fl_xyline(xx + x() - leftline_, yy + y() + 1,
                                                             xx + x() - leftline_ +
                                                             (int)fl_width(buf));

                                current_pos = ptr-value_;
                                if (line < 31)
                                    line ++;
                                xx = block->line[line];
                                yy += hh;
                                hh = fsize + 2;
                            }
                            else if (*ptr == '\t')
                            {
                                // Do tabs every 8 columns...
                                while (((s - buf) & 7))
                                    *s++ = ' ';
                            }
                            else
                                *s++ = ' ';

                            if ((fsize + 2) > hh)
                                hh = fsize + 2;

                            ptr ++;
                        }

                        if (s > buf)
                        {
                            *s = '\0';
                            s = buf;

                            hv_draw(buf, xx + x() - leftline_, yy + y());
                            ww = (int)fl_width(buf);
                            if (underline) fl_xyline(xx + x() - leftline_, yy + y() + 1,
                                                         xx + x() - leftline_ + ww);
                            xx += ww;
                            current_pos = ptr-value_;
                        }

                        needspace = 0;
                    }
                    else
                    {
                        s = buf;

                        while (isspace((*ptr)&255))
                            ptr ++;
                        current_pos = ptr-value_;
                    }
                }

                if (*ptr == '<')
                {
                    ptr ++;

                    if (strncmp(ptr, "!--", 3) == 0)
                    {
                        // Comment...
                        ptr += 3;
                        if ((ptr = strstr(ptr, "-->")) != NULL)
                        {
                            ptr += 3;
                            continue;
                        }
                        else
                            break;
                    }

                    while (*ptr && *ptr != '>' && !isspace((*ptr)&255))
                        if (s < (buf + sizeof(buf) - 1))
                            *s++ = *ptr++;
                        else
                            ptr ++;

                    *s = '\0';
                    s = buf;

                    attrs = ptr;
                    while (*ptr && *ptr != '>')
                        ptr ++;

                    if (*ptr == '>')
                        ptr ++;

                    // end of command reached, set the supposed start of printed eord here
                    current_pos = ptr-value_;
                    if (strcasecmp(buf, "HEAD") == 0)
                        head = 1;
                    else if (strcasecmp(buf, "BR") == 0)
                    {
                        if (line < 31)
                            line ++;
                        xx = block->line[line];
                        yy += hh;
                        hh = 0;
                    }
                    else if (strcasecmp(buf, "HR") == 0)
                    {
                        fl_line(block->x + x(), yy + y(), block->w + x(),
                                yy + y());

                        if (line < 31)
                            line ++;
                        xx = block->line[line];
                        yy += 2 * hh;
                        hh = 0;
                    }
                    else if (strcasecmp(buf, "CENTER") == 0 ||
                             strcasecmp(buf, "P") == 0 ||
                             strcasecmp(buf, "H1") == 0 ||
                             strcasecmp(buf, "H2") == 0 ||
                             strcasecmp(buf, "H3") == 0 ||
                             strcasecmp(buf, "H4") == 0 ||
                             strcasecmp(buf, "H5") == 0 ||
                             strcasecmp(buf, "H6") == 0 ||
                             strcasecmp(buf, "UL") == 0 ||
                             strcasecmp(buf, "OL") == 0 ||
                             strcasecmp(buf, "DL") == 0 ||
                             strcasecmp(buf, "LI") == 0 ||
                             strcasecmp(buf, "DD") == 0 ||
                             strcasecmp(buf, "DT") == 0 ||
                             strcasecmp(buf, "PRE") == 0)
                    {
                        if (tolower(buf[0]) == 'h')
                        {
                            font  = FL_HELVETICA_BOLD;
                            fsize = textsize_ + '7' - buf[1];
                        }
                        else if (strcasecmp(buf, "DT") == 0)
                        {
                            font  = textfont_ | FL_ITALIC;
                            fsize = textsize_;
                        }
                        else if (strcasecmp(buf, "PRE") == 0)
                        {
                            font  = FL_COURIER;
                            fsize = textsize_;
                            pre   = 1;
                        }

                        if (strcasecmp(buf, "LI") == 0)
                        {
//            fl_font(FL_SYMBOL, fsize); // The default SYMBOL font on my XP box is not Unicode...
                            char buf[8];
                            wchar_t b[] = {0x2022, 0x0};
//            buf[fl_unicode2utf(b, 1, buf)] = 0;
                            unsigned dstlen = fl_utf8fromwc(buf, 8, b, 1);
                            buf[dstlen] = 0;
                            hv_draw(buf, xx - fsize + x() - leftline_, yy + y());
                        }

                        pushfont(font, fsize);
                    }
                    else if (strcasecmp(buf, "A") == 0 &&
                             get_attr(attrs, "HREF", attr, sizeof(attr)) != NULL)
                    {
                        fl_color(linkcolor_);
                        underline = 1;
                    }
                    else if (strcasecmp(buf, "/A") == 0)
                    {
                        fl_color(textcolor_);
                        underline = 0;
                    }
                    else if (strcasecmp(buf, "FONT") == 0)
                    {
                        if (get_attr(attrs, "COLOR", attr, sizeof(attr)) != NULL)
                        {
                            textcolor_ = get_color(attr, textcolor_);
                        }

                        if (get_attr(attrs, "FACE", attr, sizeof(attr)) != NULL)
                        {
                            if (!strncasecmp(attr, "helvetica", 9) ||
                                    !strncasecmp(attr, "arial", 5) ||
                                    !strncasecmp(attr, "sans", 4)) font = FL_HELVETICA;
                            else if (!strncasecmp(attr, "times", 5) ||
                                     !strncasecmp(attr, "serif", 5)) font = FL_TIMES;
                            else if (!strncasecmp(attr, "symbol", 6)) font = FL_SYMBOL;
                            else font = FL_COURIER;
                        }

                        if (get_attr(attrs, "SIZE", attr, sizeof(attr)) != NULL)
                        {
                            if (isdigit(attr[0] & 255))
                            {
                                // Absolute size
                                fsize = (int)(textsize_ * pow(1.2, atof(attr) - 3.0));
                            }
                            else
                            {
                                // Relative size
                                fsize = (int)(fsize * pow(1.2, atof(attr) - 3.0));
                            }
                        }

                        pushfont(font, fsize);
                    }
                    else if (strcasecmp(buf, "/FONT") == 0)
                    {
                        popfont(font, fsize, textcolor_);
                    }
                    else if (strcasecmp(buf, "U") == 0)
                        underline = 1;
                    else if (strcasecmp(buf, "/U") == 0)
                        underline = 0;
                    else if (strcasecmp(buf, "B") == 0 ||
                             strcasecmp(buf, "STRONG") == 0)
                        pushfont(font |= FL_BOLD, fsize);
                    else if (strcasecmp(buf, "TD") == 0 ||
                             strcasecmp(buf, "TH") == 0)
                    {
                        int tx, ty, tw, th;

                        if (tolower(buf[1]) == 'h')
                            pushfont(font |= FL_BOLD, fsize);
                        else
                            pushfont(font = textfont_, fsize);

                        tx = block->x - 4 - leftline_;
                        ty = block->y - topline_ - fsize - 3;
                        tw = block->w - block->x + 7;
                        th = block->h + fsize - 5;

                        if (tx < 0)
                        {
                            tw += tx;
                            tx  = 0;
                        }

                        if (ty < 0)
                        {
                            th += ty;
                            ty  = 0;
                        }

                        tx += x();
                        ty += y();

                        if (block->bgcolor != bgcolor_)
                        {
                            fl_color(block->bgcolor);
                            fl_rectf(tx, ty, tw, th);
                            fl_color(textcolor_);
                        }

                        if (block->border)
                            fl_rect(tx, ty, tw, th);
                    }
                    else if (strcasecmp(buf, "I") == 0 ||
                             strcasecmp(buf, "EM") == 0)
                        pushfont(font |= FL_ITALIC, fsize);
                    else if (strcasecmp(buf, "CODE") == 0 ||
                             strcasecmp(buf, "TT") == 0)
                        pushfont(font = FL_COURIER, fsize);
                    else if (strcasecmp(buf, "KBD") == 0)
                        pushfont(font = FL_COURIER_BOLD, fsize);
                    else if (strcasecmp(buf, "VAR") == 0)
                        pushfont(font = FL_COURIER_ITALIC, fsize);
                    else if (strcasecmp(buf, "/HEAD") == 0)
                        head = 0;
                    else if (strcasecmp(buf, "/H1") == 0 ||
                             strcasecmp(buf, "/H2") == 0 ||
                             strcasecmp(buf, "/H3") == 0 ||
                             strcasecmp(buf, "/H4") == 0 ||
                             strcasecmp(buf, "/H5") == 0 ||
                             strcasecmp(buf, "/H6") == 0 ||
                             strcasecmp(buf, "/B") == 0 ||
                             strcasecmp(buf, "/STRONG") == 0 ||
                             strcasecmp(buf, "/I") == 0 ||
                             strcasecmp(buf, "/EM") == 0 ||
                             strcasecmp(buf, "/CODE") == 0 ||
                             strcasecmp(buf, "/TT") == 0 ||
                             strcasecmp(buf, "/KBD") == 0 ||
                             strcasecmp(buf, "/VAR") == 0)
                        popfont(font, fsize, fcolor);
                    else if (strcasecmp(buf, "/PRE") == 0)
                    {
                        popfont(font, fsize, fcolor);
                        pre = 0;
                    }
                    else if (strcasecmp(buf, "IMG") == 0)
                    {
                        Fl_Shared_Image *img = 0;
                        int		width, height;
                        char	wattr[8], hattr[8];


                        get_attr(attrs, "WIDTH", wattr, sizeof(wattr));
                        get_attr(attrs, "HEIGHT", hattr, sizeof(hattr));
                        width  = get_length(wattr);
                        height = get_length(hattr);

                        if (get_attr(attrs, "SRC", attr, sizeof(attr)))
                        {
                            img = get_image(attr, width, height);
                            if (!width) width = img->w();
                            if (!height) height = img->h();
                        }

                        if (!width || !height)
                        {
                            if (get_attr(attrs, "ALT", attr, sizeof(attr)) == NULL)
                            {
                                strcpy(attr, "IMG");
                            }
                        }

                        ww = width;

                        if (needspace && xx > block->x)
                            xx += (int)fl_width(' ');

                        if ((xx + ww) > block->w)
                        {
                            if (line < 31)
                                line ++;

                            xx = block->line[line];
                            yy += hh;
                            hh = 0;
                        }

                        if (img)
                        {
                            img->draw(xx + x() - leftline_,
                                      yy + y() - fl_height() + fl_descent() + 2);
                        }

                        xx += ww;
                        if ((height + 2) > hh)
                            hh = height + 2;

                        needspace = 0;
                    }
                }
                else if (*ptr == '\n' && pre)
                {
                    *s = '\0';
                    s = buf;

                    hv_draw(buf, xx + x() - leftline_, yy + y());

                    if (line < 31)
                        line ++;
                    xx = block->line[line];
                    yy += hh;
                    hh = fsize + 2;
                    needspace = 0;

                    ptr ++;
                    current_pos = ptr-value_;
                }
                else if (isspace((*ptr)&255))
                {
                    if (pre)
                    {
                        if (*ptr == ' ')
                            *s++ = ' ';
                        else
                        {
                            // Do tabs every 8 columns...
                            while (((s - buf) & 7))
                                *s++ = ' ';
                        }
                    }

                    ptr ++;
                    if (!pre) current_pos = ptr-value_;
                    needspace = 1;
                }
                else if (*ptr == '&')
                {
                    ptr ++;

                    int qch = quote_char(ptr);

                    if (qch < 0)
                        *s++ = '&';
                    else
                    {
                        int l;
                        l = fl_utf8encode((unsigned int) qch, s);
                        if (l < 1) l = 1;
                        s += l;
                        ptr = strchr(ptr, ';') + 1;
                    }

                    if ((fsize + 2) > hh)
                        hh = fsize + 2;
                }
                else
                {
                    *s++ = *ptr++;

                    if ((fsize + 2) > hh)
                        hh = fsize + 2;
                }
            }

            *s = '\0';

            if (s > buf && !pre && !head)
            {
                ww = (int)fl_width(buf);

                if (needspace && xx > block->x)
                    xx += (int)fl_width(' ');

                if ((xx + ww) > block->w)
                {
                    if (line < 31)
                        line ++;
                    xx = block->line[line];
                    yy += hh;
                    hh = 0;
                }
            }

            if (s > buf && !head)
            {
                hv_draw(buf, xx + x() - leftline_, yy + y());
                if (underline) fl_xyline(xx + x() - leftline_, yy + y() + 1,
                                             xx + x() - leftline_ + ww);
                current_pos = ptr-value_;
            }
        }

    fl_pop_clip();
}



/** Finds the specified string \p s at starting position \p p.

    \return the matching position or -1 if not found
*/
int						// O - Matching position or -1 if not found
Fl_Help_View::find(const char *s,		// I - String to find
                   int        p)		// I - Starting position
{
    int		i,				// Looping var
    c;				// Current character
    Fl_Help_Block	*b;				// Current block
    const char	*bp,				// Block matching pointer
    *bs,				// Start of current comparison
    *sp;				// Search string pointer


    // Range check input and value...
    if (!s || !value_) return -1;

    if (p < 0 || p >= (int)strlen(value_)) p = 0;
    else if (p > 0) p ++;

    // Look for the string...
    for (i = nblocks_, b = blocks_; i > 0; i --, b ++)
    {
        if (b->end < (value_ + p))
            continue;

        if (b->start < (value_ + p)) bp = value_ + p;
        else bp = b->start;

        for (sp = s, bs = bp; *sp && *bp && bp < b->end; bp ++)
        {
            if (*bp == '<')
            {
                // skip to end of element...
                while (*bp && bp < b->end && *bp != '>') bp ++;
                continue;
            }
            else if (*bp == '&')
            {
                // decode HTML entity...
                if ((c = quote_char(bp + 1)) < 0) c = '&';
                else bp = strchr(bp + 1, ';') + 1;
            }
            else c = *bp;

            if (tolower(*sp) == tolower(c)) sp ++;
            else
            {
                // No match, so reset to start of search...
                sp = s;
                bs ++;
                bp = bs;
            }
        }

        if (!*sp)
        {
            // Found a match!
            topline(b->y - b->h);
            return (b->end - value_);
        }
    }

    // No match!
    return (-1);
}

/** Formats the help text. */
void Fl_Help_View::format()
{
    int		i;		// Looping var
    int		done;		// Are we done yet?
    Fl_Help_Block	*block,		// Current block
    *cell;		// Current table cell
    int		cells[MAX_COLUMNS],
    // Cells in the current row...
    row;		// Current table row (block number)
    const char	*ptr,		// Pointer into block
    *start,		// Pointer to start of element
    *attrs;		// Pointer to start of element attributes
    char		*s,		// Pointer into buffer
    buf[1024],	// Text buffer
    attr[1024],	// Attribute buffer
    wattr[1024],	// Width attribute buffer
    hattr[1024],	// Height attribute buffer
    linkdest[1024];	// Link destination
    int		xx, yy, ww, hh;	// Size of current text fragment
    int		line;		// Current line in block
    int		links;		// Links for current line
    Fl_Font       font;
    Fl_Fontsize   fsize;          // Current font and size
    Fl_Color      fcolor;         // Current font color
    unsigned char	border;		// Draw border?
    int		talign,		// Current alignment
    newalign,	// New alignment
    head,		// In the <HEAD> section?
    pre,		// <PRE> text?
    needspace;	// Do we need whitespace?
    int		table_width,	// Width of table
    table_offset;	// Offset of table
    int		column,		// Current table column number
    columns[MAX_COLUMNS];
    // Column widths
    Fl_Color	tc, rc;		// Table/row background color
    Fl_Boxtype	b = box() ? box() : FL_DOWN_BOX;
    // Box to draw...
    fl_margins	margins;	// Left margin stack...


    // Reset document width...
    int scrollsize = scrollbar_size_ ? scrollbar_size_ : Fl::scrollbar_size();
    hsize_ = w() - scrollsize - Fl::box_dw(b);

    done = 0;
    while (!done)
    {
        // Reset state variables...
        done       = 1;
        nblocks_   = 0;
        nlinks_    = 0;
        ntargets_  = 0;
        size_      = 0;
        bgcolor_   = color();
        textcolor_ = textcolor();
        linkcolor_ = fl_contrast(FL_BLUE, color());

        tc = rc = bgcolor_;

        strcpy(title_, "Untitled");

        if (!value_)
            return;

        // Setup for formatting...
        initfont(font, fsize, fcolor);

        line         = 0;
        links        = 0;
        xx           = margins.clear();
        yy           = fsize + 2;
        ww           = 0;
        column       = 0;
        border       = 0;
        hh           = 0;
        block        = add_block(value_, xx, yy, hsize_, 0);
        row          = 0;
        head         = 0;
        pre          = 0;
        talign       = LEFT;
        newalign     = LEFT;
        needspace    = 0;
        linkdest[0]  = '\0';
        table_offset = 0;

        // Html text character loop
        for (ptr = value_, s = buf; *ptr;)
        {
            // End of word?
            if ((*ptr == '<' || isspace((*ptr)&255)) && s > buf)
            {
                // Get width of word parsed so far...
                *s = '\0';
                ww = (int)fl_width(buf);

                if (!head && !pre)
                {
                    // Check width...
                    if (ww > hsize_)
                    {
                        hsize_ = ww;
                        done   = 0;
                        break;
                    }

                    if (needspace && xx > block->x)
                        ww += (int)fl_width(' ');

                    //        printf("line = %d, xx = %d, ww = %d, block->x = %d, block->w = %d\n",
                    //	       line, xx, ww, block->x, block->w);

                    if ((xx + ww) > block->w)
                    {
                        line     = do_align(block, line, xx, newalign, links);
                        xx       = block->x;
                        yy       += hh;
                        block->h += hh;
                        hh       = 0;
                    }

                    if (linkdest[0])
                        add_link(linkdest, xx, yy - fsize, ww, fsize);

                    xx += ww;
                    if ((fsize + 2) > hh)
                        hh = fsize + 2;

                    needspace = 0;
                }
                else if (pre)
                {
                    // Add a link as needed...
                    if (linkdest[0])
                        add_link(linkdest, xx, yy - hh, ww, hh);

                    xx += ww;
                    if ((fsize + 2) > hh)
                        hh = fsize + 2;

                    // Handle preformatted text...
                    while (isspace((*ptr)&255))
                    {
                        if (*ptr == '\n')
                        {
                            if (xx > hsize_) break;

                            line     = do_align(block, line, xx, newalign, links);
                            xx       = block->x;
                            yy       += hh;
                            block->h += hh;
                            hh       = fsize + 2;
                        }
                        else
                            xx += (int)fl_width(' ');

                        if ((fsize + 2) > hh)
                            hh = fsize + 2;

                        ptr ++;
                    }

                    if (xx > hsize_)
                    {
                        hsize_ = xx;
                        done   = 0;
                        break;
                    }

                    needspace = 0;
                }
                else
                {
                    // Handle normal text or stuff in the <HEAD> section...
                    while (isspace((*ptr)&255))
                        ptr ++;
                }

                s = buf;
            }

            if (*ptr == '<')
            {
                // Handle html tags..
                start = ptr;
                ptr ++;

                if (strncmp(ptr, "!--", 3) == 0)
                {
                    // Comment...
                    ptr += 3;
                    if ((ptr = strstr(ptr, "-->")) != NULL)
                    {
                        ptr += 3;
                        continue;
                    }
                    else
                        break;
                }

                while (*ptr && *ptr != '>' && !isspace((*ptr)&255))
                    if (s < (buf + sizeof(buf) - 1))
                        *s++ = *ptr++;
                    else
                        ptr ++;

                *s = '\0';
                s = buf;

//        puts(buf);

                attrs = ptr;
                while (*ptr && *ptr != '>')
                    ptr ++;

                if (*ptr == '>')
                    ptr ++;

                if (strcasecmp(buf, "HEAD") == 0)
                    head = 1;
                else if (strcasecmp(buf, "/HEAD") == 0)
                    head = 0;
                else if (strcasecmp(buf, "TITLE") == 0)
                {
                    // Copy the title in the document...
                    for (s = title_;
                            *ptr != '<' && *ptr && s < (title_ + sizeof(title_) - 1);
                            *s++ = *ptr++);

                    *s = '\0';
                    s = buf;
                }
                else if (strcasecmp(buf, "A") == 0)
                {
                    if (get_attr(attrs, "NAME", attr, sizeof(attr)) != NULL)
                        add_target(attr, yy - fsize - 2);

                    if (get_attr(attrs, "HREF", attr, sizeof(attr)) != NULL)
                        strlcpy(linkdest, attr, sizeof(linkdest));
                }
                else if (strcasecmp(buf, "/A") == 0)
                    linkdest[0] = '\0';
                else if (strcasecmp(buf, "BODY") == 0)
                {
                    bgcolor_   = get_color(get_attr(attrs, "BGCOLOR", attr, sizeof(attr)),
                                           color());
                    textcolor_ = get_color(get_attr(attrs, "TEXT", attr, sizeof(attr)),
                                           textcolor());
                    linkcolor_ = get_color(get_attr(attrs, "LINK", attr, sizeof(attr)),
                                           fl_contrast(FL_BLUE, color()));
                }
                else if (strcasecmp(buf, "BR") == 0)
                {
                    line     = do_align(block, line, xx, newalign, links);
                    xx       = block->x;
                    block->h += hh;
                    yy       += hh;
                    hh       = 0;
                }
                else if (strcasecmp(buf, "CENTER") == 0 ||
                         strcasecmp(buf, "P") == 0 ||
                         strcasecmp(buf, "H1") == 0 ||
                         strcasecmp(buf, "H2") == 0 ||
                         strcasecmp(buf, "H3") == 0 ||
                         strcasecmp(buf, "H4") == 0 ||
                         strcasecmp(buf, "H5") == 0 ||
                         strcasecmp(buf, "H6") == 0 ||
                         strcasecmp(buf, "UL") == 0 ||
                         strcasecmp(buf, "OL") == 0 ||
                         strcasecmp(buf, "DL") == 0 ||
                         strcasecmp(buf, "LI") == 0 ||
                         strcasecmp(buf, "DD") == 0 ||
                         strcasecmp(buf, "DT") == 0 ||
                         strcasecmp(buf, "HR") == 0 ||
                         strcasecmp(buf, "PRE") == 0 ||
                         strcasecmp(buf, "TABLE") == 0)
                {
                    block->end = start;
                    line       = do_align(block, line, xx, newalign, links);
                    newalign   = strcasecmp(buf, "CENTER") ? LEFT : CENTER;
                    xx         = block->x;
                    block->h   += hh;

                    if (strcasecmp(buf, "UL") == 0 ||
                            strcasecmp(buf, "OL") == 0 ||
                            strcasecmp(buf, "DL") == 0)
                    {
                        block->h += fsize + 2;
                        xx       = margins.push(4 * fsize);
                    }
                    else if (strcasecmp(buf, "TABLE") == 0)
                    {
                        if (get_attr(attrs, "BORDER", attr, sizeof(attr)))
                            border = (uchar)atoi(attr);
                        else
                            border = 0;

                        tc = rc = get_color(get_attr(attrs, "BGCOLOR", attr, sizeof(attr)), bgcolor_);

                        block->h += fsize + 2;

                        format_table(&table_width, columns, start);

                        if ((xx + table_width) > hsize_)
                        {
#ifdef DEBUG
                            printf("xx=%d, table_width=%d, hsize_=%d\n", xx, table_width,
                                   hsize_);
#endif // DEBUG
                            hsize_ = xx + table_width;
                            done   = 0;
                            break;
                        }

                        switch (get_align(attrs, talign))
                        {
                        default :
                            table_offset = 0;
                            break;

                        case CENTER :
                            table_offset = (hsize_ - table_width) / 2 - textsize_;
                            break;

                        case RIGHT :
                            table_offset = hsize_ - table_width - textsize_;
                            break;
                        }

                        column = 0;
                    }

                    if (tolower(buf[0]) == 'h' && isdigit(buf[1]))
                    {
                        font  = FL_HELVETICA_BOLD;
                        fsize = textsize_ + '7' - buf[1];
                    }
                    else if (strcasecmp(buf, "DT") == 0)
                    {
                        font  = textfont_ | FL_ITALIC;
                        fsize = textsize_;
                    }
                    else if (strcasecmp(buf, "PRE") == 0)
                    {
                        font  = FL_COURIER;
                        fsize = textsize_;
                        pre   = 1;
                    }
                    else
                    {
                        font  = textfont_;
                        fsize = textsize_;
                    }

                    pushfont(font, fsize);

                    yy = block->y + block->h;
                    hh = 0;

                    if ((tolower(buf[0]) == 'h' && isdigit(buf[1])) ||
                            strcasecmp(buf, "DD") == 0 ||
                            strcasecmp(buf, "DT") == 0 ||
                            strcasecmp(buf, "P") == 0)
                        yy += fsize + 2;
                    else if (strcasecmp(buf, "HR") == 0)
                    {
                        hh += 2 * fsize;
                        yy += fsize;
                    }

                    if (row)
                        block = add_block(start, xx, yy, block->w, 0);
                    else
                        block = add_block(start, xx, yy, hsize_, 0);

                    needspace = 0;
                    line      = 0;

                    if (strcasecmp(buf, "CENTER") == 0)
                        newalign = talign = CENTER;
                    else
                        newalign = get_align(attrs, talign);
                }
                else if (strcasecmp(buf, "/CENTER") == 0 ||
                         strcasecmp(buf, "/P") == 0 ||
                         strcasecmp(buf, "/H1") == 0 ||
                         strcasecmp(buf, "/H2") == 0 ||
                         strcasecmp(buf, "/H3") == 0 ||
                         strcasecmp(buf, "/H4") == 0 ||
                         strcasecmp(buf, "/H5") == 0 ||
                         strcasecmp(buf, "/H6") == 0 ||
                         strcasecmp(buf, "/PRE") == 0 ||
                         strcasecmp(buf, "/UL") == 0 ||
                         strcasecmp(buf, "/OL") == 0 ||
                         strcasecmp(buf, "/DL") == 0 ||
                         strcasecmp(buf, "/TABLE") == 0)
                {
                    line       = do_align(block, line, xx, newalign, links);
                    xx         = block->x;
                    block->end = ptr;

                    if (strcasecmp(buf, "/UL") == 0 ||
                            strcasecmp(buf, "/OL") == 0 ||
                            strcasecmp(buf, "/DL") == 0)
                    {
                        xx       = margins.pop();
                        block->h += fsize + 2;
                    }
                    else if (strcasecmp(buf, "/TABLE") == 0)
                    {
                        block->h += fsize + 2;
                        xx       = margins.current();
                    }
                    else if (strcasecmp(buf, "/PRE") == 0)
                    {
                        pre = 0;
                        hh  = 0;
                    }
                    else if (strcasecmp(buf, "/CENTER") == 0)
                        talign = LEFT;

                    popfont(font, fsize, fcolor);

                    //#if defined(__GNUC__)
                    //#warning FIXME this isspace & 255 test will probably not work on a utf8 stream... And we use it everywhere!
                    //#endif /*__GNUC__*/
                    while (isspace((*ptr)&255))
                        ptr ++;

                    block->h += hh;
                    yy       += hh;

                    if (tolower(buf[2]) == 'l')
                        yy += fsize + 2;

                    if (row)
                        block = add_block(ptr, xx, yy, block->w, 0);
                    else
                        block = add_block(ptr, xx, yy, hsize_, 0);

                    needspace = 0;
                    hh        = 0;
                    line      = 0;
                    newalign  = talign;
                }
                else if (strcasecmp(buf, "TR") == 0)
                {
                    block->end = start;
                    line       = do_align(block, line, xx, newalign, links);
                    xx         = block->x;
                    block->h   += hh;

                    if (row)
                    {
                        yy = blocks_[row].y + blocks_[row].h;

                        for (cell = blocks_ + row + 1; cell <= block; cell ++)
                            if ((cell->y + cell->h) > yy)
                                yy = cell->y + cell->h;

                        block = blocks_ + row;

                        block->h = yy - block->y + 2;

                        for (i = 0; i < column; i ++)
                            if (cells[i])
                            {
                                cell = blocks_ + cells[i];
                                cell->h = block->h;
                            }
                    }

                    memset(cells, 0, sizeof(cells));

                    yy        = block->y + block->h - 4;
                    hh        = 0;
                    block     = add_block(start, xx, yy, hsize_, 0);
                    row       = block - blocks_;
                    needspace = 0;
                    column    = 0;
                    line      = 0;

                    rc = get_color(get_attr(attrs, "BGCOLOR", attr, sizeof(attr)), tc);
                }
                else if (strcasecmp(buf, "/TR") == 0 && row)
                {
                    line       = do_align(block, line, xx, newalign, links);
                    block->end = start;
                    block->h   += hh;
                    talign     = LEFT;

                    xx = blocks_[row].x;
                    yy = blocks_[row].y + blocks_[row].h;

                    for (cell = blocks_ + row + 1; cell <= block; cell ++)
                        if ((cell->y + cell->h) > yy)
                            yy = cell->y + cell->h;

                    block = blocks_ + row;

                    block->h = yy - block->y + 2;

                    for (i = 0; i < column; i ++)
                        if (cells[i])
                        {
                            cell = blocks_ + cells[i];
                            cell->h = block->h;
                        }

                    yy        = block->y + block->h /*- 4*/;
                    block     = add_block(start, xx, yy, hsize_, 0);
                    needspace = 0;
                    row       = 0;
                    line      = 0;
                }
                else if ((strcasecmp(buf, "TD") == 0 ||
                          strcasecmp(buf, "TH") == 0) && row)
                {
                    int	colspan;		// COLSPAN attribute


                    line       = do_align(block, line, xx, newalign, links);
                    block->end = start;
                    block->h   += hh;

                    if (strcasecmp(buf, "TH") == 0)
                        font = textfont_ | FL_BOLD;
                    else
                        font = textfont_;

                    fsize = textsize_;

                    xx = blocks_[row].x + fsize + 3 + table_offset;
                    for (i = 0; i < column; i ++)
                        xx += columns[i] + 6;

                    margins.push(xx - margins.current());

                    if (get_attr(attrs, "COLSPAN", attr, sizeof(attr)) != NULL)
                        colspan = atoi(attr);
                    else
                        colspan = 1;

                    for (i = 0, ww = -6; i < colspan; i ++)
                        ww += columns[column + i] + 6;

                    if (block->end == block->start && nblocks_ > 1)
                    {
                        nblocks_ --;
                        block --;
                    }

                    pushfont(font, fsize);

                    yy        = blocks_[row].y;
                    hh        = 0;
                    block     = add_block(start, xx, yy, xx + ww, 0, border);
                    needspace = 0;
                    line      = 0;
                    newalign  = get_align(attrs, tolower(buf[1]) == 'h' ? CENTER : LEFT);
                    talign    = newalign;

                    cells[column] = block - blocks_;

                    column += colspan;

                    block->bgcolor = get_color(get_attr(attrs, "BGCOLOR", attr,
                                                        sizeof(attr)), rc);
                }
                else if ((strcasecmp(buf, "/TD") == 0 ||
                          strcasecmp(buf, "/TH") == 0) && row)
                {
                    line = do_align(block, line, xx, newalign, links);
                    popfont(font, fsize, fcolor);
                    xx = margins.pop();
                    talign = LEFT;
                }
                else if (strcasecmp(buf, "FONT") == 0)
                {
                    if (get_attr(attrs, "FACE", attr, sizeof(attr)) != NULL)
                    {
                        if (!strncasecmp(attr, "helvetica", 9) ||
                                !strncasecmp(attr, "arial", 5) ||
                                !strncasecmp(attr, "sans", 4)) font = FL_HELVETICA;
                        else if (!strncasecmp(attr, "times", 5) ||
                                 !strncasecmp(attr, "serif", 5)) font = FL_TIMES;
                        else if (!strncasecmp(attr, "symbol", 6)) font = FL_SYMBOL;
                        else font = FL_COURIER;
                    }

                    if (get_attr(attrs, "SIZE", attr, sizeof(attr)) != NULL)
                    {
                        if (isdigit(attr[0] & 255))
                        {
                            // Absolute size
                            fsize = (int)(textsize_ * pow(1.2, atoi(attr) - 3.0));
                        }
                        else
                        {
                            // Relative size
                            fsize = (int)(fsize * pow(1.2, atoi(attr)));
                        }
                    }

                    pushfont(font, fsize);
                }
                else if (strcasecmp(buf, "/FONT") == 0)
                    popfont(font, fsize, fcolor);
                else if (strcasecmp(buf, "B") == 0 ||
                         strcasecmp(buf, "STRONG") == 0)
                    pushfont(font |= FL_BOLD, fsize);
                else if (strcasecmp(buf, "I") == 0 ||
                         strcasecmp(buf, "EM") == 0)
                    pushfont(font |= FL_ITALIC, fsize);
                else if (strcasecmp(buf, "CODE") == 0 ||
                         strcasecmp(buf, "TT") == 0)
                    pushfont(font = FL_COURIER, fsize);
                else if (strcasecmp(buf, "KBD") == 0)
                    pushfont(font = FL_COURIER_BOLD, fsize);
                else if (strcasecmp(buf, "VAR") == 0)
                    pushfont(font = FL_COURIER_ITALIC, fsize);
                else if (strcasecmp(buf, "/B") == 0 ||
                         strcasecmp(buf, "/STRONG") == 0 ||
                         strcasecmp(buf, "/I") == 0 ||
                         strcasecmp(buf, "/EM") == 0 ||
                         strcasecmp(buf, "/CODE") == 0 ||
                         strcasecmp(buf, "/TT") == 0 ||
                         strcasecmp(buf, "/KBD") == 0 ||
                         strcasecmp(buf, "/VAR") == 0)
                    popfont(font, fsize, fcolor);
                else if (strcasecmp(buf, "IMG") == 0)
                {
                    Fl_Shared_Image	*img = 0;
                    int		width;
                    int		height;


                    get_attr(attrs, "WIDTH", wattr, sizeof(wattr));
                    get_attr(attrs, "HEIGHT", hattr, sizeof(hattr));
                    width  = get_length(wattr);
                    height = get_length(hattr);

                    if (get_attr(attrs, "SRC", attr, sizeof(attr)))
                    {
                        img    = get_image(attr, width, height);
                        width  = img->w();
                        height = img->h();
                    }

                    ww = width;

                    if (ww > hsize_)
                    {
                        hsize_ = ww;
                        done   = 0;
                        break;
                    }

                    if (needspace && xx > block->x)
                        ww += (int)fl_width(' ');

                    if ((xx + ww) > block->w)
                    {
                        line     = do_align(block, line, xx, newalign, links);
                        xx       = block->x;
                        yy       += hh;
                        block->h += hh;
                        hh       = 0;
                    }

                    if (linkdest[0])
                        add_link(linkdest, xx, yy - height, ww, height);

                    xx += ww;
                    if ((height + 2) > hh)
                        hh = height + 2;

                    needspace = 0;
                }
            }
            else if (*ptr == '\n' && pre)
            {
                if (linkdest[0])
                    add_link(linkdest, xx, yy - hh, ww, hh);

                if (xx > hsize_)
                {
                    hsize_ = xx;
                    done   = 0;
                    break;
                }

                line      = do_align(block, line, xx, newalign, links);
                xx        = block->x;
                yy        += hh;
                block->h  += hh;
                needspace = 0;
                ptr ++;
            }
            else if (isspace((*ptr)&255))
            {
                needspace = 1;
                if ( pre )
                {
                    xx += (int)fl_width(' ');
                }
                ptr ++;
            }
            else if (*ptr == '&' && s < (buf + sizeof(buf) - 1))
            {
                // Handle html '&' codes, eg. "&amp;"
                ptr ++;

                int qch = quote_char(ptr);

                if (qch < 0)
                    *s++ = '&';
                else
                {
                    int l;
                    l = fl_utf8encode((unsigned int) qch, s);
                    if (l < 1) l = 1;
                    s += l;
                    ptr = strchr(ptr, ';') + 1;
                }

                if ((fsize + 2) > hh)
                    hh = fsize + 2;
            }
            else
            {
                if (s < (buf + sizeof(buf) - 1))
                    *s++ = *ptr++;
                else
                    ptr ++;

                if ((fsize + 2) > hh)
                    hh = fsize + 2;
            }
        }

        if (s > buf && !head)
        {
            *s = '\0';
            ww = (int)fl_width(buf);

            //    printf("line = %d, xx = %d, ww = %d, block->x = %d, block->w = %d\n",
            //	   line, xx, ww, block->x, block->w);

            if (ww > hsize_)
            {
                hsize_ = ww;
                done   = 0;
                break;
            }

            if (needspace && xx > block->x)
                ww += (int)fl_width(' ');

            if ((xx + ww) > block->w)
            {
                line     = do_align(block, line, xx, newalign, links);
                xx       = block->x;
                yy       += hh;
                block->h += hh;
                hh       = 0;
            }

            if (linkdest[0])
                add_link(linkdest, xx, yy - fsize, ww, fsize);

            xx += ww;
        }

        do_align(block, line, xx, newalign, links);

        block->end = ptr;
        size_      = yy + hh;
    }

//  printf("margins.depth_=%d\n", margins.depth_);

    if (ntargets_ > 1)
        qsort(targets_, ntargets_, sizeof(Fl_Help_Target),
              (compare_func_t)compare_targets);

    int dx = Fl::box_dw(b) - Fl::box_dx(b);
    int dy = Fl::box_dh(b) - Fl::box_dy(b);
    int ss = scrollbar_size_ ? scrollbar_size_ : Fl::scrollbar_size();
    int dw = Fl::box_dw(b) + ss;
    int dh = Fl::box_dh(b);

    if (hsize_ > (w() - dw))
    {
        hscrollbar_.show();

        dh += ss;

        if (size_ < (h() - dh))
        {
            scrollbar_.hide();
            hscrollbar_.resize(x() + Fl::box_dx(b), y() + h() - ss - dy,
                               w() - Fl::box_dw(b), ss);
        }
        else
        {
            scrollbar_.show();
            scrollbar_.resize(x() + w() - ss - dx, y() + Fl::box_dy(b),
                              ss, h() - ss - Fl::box_dh(b));
            hscrollbar_.resize(x() + Fl::box_dx(b), y() + h() - ss - dy,
                               w() - ss - Fl::box_dw(b), ss);
        }
    }
    else
    {
        hscrollbar_.hide();

        if (size_ < (h() - dh)) scrollbar_.hide();
        else
        {
            scrollbar_.resize(x() + w() - ss - dx, y() + Fl::box_dy(b),
                              ss, h() - Fl::box_dh(b));
            scrollbar_.show();
        }
    }

    // Reset scrolling if it needs to be...
    if (scrollbar_.visible())
    {
        int temph = h() - Fl::box_dh(b);
        if (hscrollbar_.visible()) temph -= ss;
        if ((topline_ + temph) > size_) topline(size_ - temph);
        else topline(topline_);
    }
    else topline(0);

    if (hscrollbar_.visible())
    {
        int tempw = w() - ss - Fl::box_dw(b);
        if ((leftline_ + tempw) > hsize_) leftline(hsize_ - tempw);
        else leftline(leftline_);
    }
    else leftline(0);
}


/** Formats a table */
void
Fl_Help_View::format_table(int        *table_width,	// O - Total table width
                           int        *columns,		// O - Column widths
                           const char *table)		// I - Pointer to start of table
{
    int		column,					// Current column
    num_columns,				// Number of columns
    colspan,				// COLSPAN attribute
    width,					// Current width
    temp_width,				// Temporary width
    max_width,				// Maximum width
    incell,					// In a table cell?
    pre,					// <PRE> text?
    needspace;				// Need whitespace?
    char		*s,					// Pointer into buffer
    buf[1024],				// Text buffer
    attr[1024],				// Other attribute
    wattr[1024],				// WIDTH attribute
    hattr[1024];				// HEIGHT attribute
    const char	*ptr,					// Pointer into table
    *attrs,					// Pointer to attributes
    *start;					// Start of element
    int		minwidths[MAX_COLUMNS];			// Minimum widths for each column
    Fl_Font       font;
    Fl_Fontsize   fsize;				        // Current font and size
    Fl_Color      fcolor;                                 // Currrent font color

    // Clear widths...
    *table_width = 0;
    for (column = 0; column < MAX_COLUMNS; column ++)
    {
        columns[column]   = 0;
        minwidths[column] = 0;
    }

    num_columns = 0;
    colspan     = 0;
    max_width   = 0;
    pre         = 0;
    needspace   = 0;
    fstack_.top(font, fsize, fcolor);

    // Scan the table...
    for (ptr = table, column = -1, width = 0, s = buf, incell = 0; *ptr;)
    {
        if ((*ptr == '<' || isspace((*ptr)&255)) && s > buf && incell)
        {
            // Check width...
            if (needspace)
            {
                *s++      = ' ';
                needspace = 0;
            }

            *s         = '\0';
            temp_width = (int)fl_width(buf);
            s          = buf;

            if (temp_width > minwidths[column])
                minwidths[column] = temp_width;

            width += temp_width;

            if (width > max_width)
                max_width = width;
        }

        if (*ptr == '<')
        {
            start = ptr;

            for (s = buf, ptr ++; *ptr && *ptr != '>' && !isspace((*ptr)&255);)
                if (s < (buf + sizeof(buf) - 1))
                    *s++ = *ptr++;
                else
                    ptr ++;

            *s = '\0';
            s = buf;

            attrs = ptr;
            while (*ptr && *ptr != '>')
                ptr ++;

            if (*ptr == '>')
                ptr ++;

            if (strcasecmp(buf, "BR") == 0 ||
                    strcasecmp(buf, "HR") == 0)
            {
                width     = 0;
                needspace = 0;
            }
            else if (strcasecmp(buf, "TABLE") == 0 && start > table)
                break;
            else if (strcasecmp(buf, "CENTER") == 0 ||
                     strcasecmp(buf, "P") == 0 ||
                     strcasecmp(buf, "H1") == 0 ||
                     strcasecmp(buf, "H2") == 0 ||
                     strcasecmp(buf, "H3") == 0 ||
                     strcasecmp(buf, "H4") == 0 ||
                     strcasecmp(buf, "H5") == 0 ||
                     strcasecmp(buf, "H6") == 0 ||
                     strcasecmp(buf, "UL") == 0 ||
                     strcasecmp(buf, "OL") == 0 ||
                     strcasecmp(buf, "DL") == 0 ||
                     strcasecmp(buf, "LI") == 0 ||
                     strcasecmp(buf, "DD") == 0 ||
                     strcasecmp(buf, "DT") == 0 ||
                     strcasecmp(buf, "PRE") == 0)
            {
                width     = 0;
                needspace = 0;

                if (tolower(buf[0]) == 'h' && isdigit(buf[1]))
                {
                    font  = FL_HELVETICA_BOLD;
                    fsize = textsize_ + '7' - buf[1];
                }
                else if (strcasecmp(buf, "DT") == 0)
                {
                    font  = textfont_ | FL_ITALIC;
                    fsize = textsize_;
                }
                else if (strcasecmp(buf, "PRE") == 0)
                {
                    font  = FL_COURIER;
                    fsize = textsize_;
                    pre   = 1;
                }
                else if (strcasecmp(buf, "LI") == 0)
                {
                    width  += 4 * fsize;
                    font   = textfont_;
                    fsize  = textsize_;
                }
                else
                {
                    font  = textfont_;
                    fsize = textsize_;
                }

                pushfont(font, fsize);
            }
            else if (strcasecmp(buf, "/CENTER") == 0 ||
                     strcasecmp(buf, "/P") == 0 ||
                     strcasecmp(buf, "/H1") == 0 ||
                     strcasecmp(buf, "/H2") == 0 ||
                     strcasecmp(buf, "/H3") == 0 ||
                     strcasecmp(buf, "/H4") == 0 ||
                     strcasecmp(buf, "/H5") == 0 ||
                     strcasecmp(buf, "/H6") == 0 ||
                     strcasecmp(buf, "/PRE") == 0 ||
                     strcasecmp(buf, "/UL") == 0 ||
                     strcasecmp(buf, "/OL") == 0 ||
                     strcasecmp(buf, "/DL") == 0)
            {
                width     = 0;
                needspace = 0;

                popfont(font, fsize, fcolor);
            }
            else if (strcasecmp(buf, "TR") == 0 || strcasecmp(buf, "/TR") == 0 ||
                     strcasecmp(buf, "/TABLE") == 0)
            {
//        printf("%s column = %d, colspan = %d, num_columns = %d\n",
//	       buf, column, colspan, num_columns);

                if (column >= 0)
                {
                    // This is a hack to support COLSPAN...
                    max_width /= colspan;

                    while (colspan > 0)
                    {
                        if (max_width > columns[column])
                            columns[column] = max_width;

                        column ++;
                        colspan --;
                    }
                }

                if (strcasecmp(buf, "/TABLE") == 0)
                    break;

                needspace = 0;
                column    = -1;
                width     = 0;
                max_width = 0;
                incell    = 0;
            }
            else if (strcasecmp(buf, "TD") == 0 ||
                     strcasecmp(buf, "TH") == 0)
            {
//        printf("BEFORE column = %d, colspan = %d, num_columns = %d\n",
//	       column, colspan, num_columns);

                if (column >= 0)
                {
                    // This is a hack to support COLSPAN...
                    max_width /= colspan;

                    while (colspan > 0)
                    {
                        if (max_width > columns[column])
                            columns[column] = max_width;

                        column ++;
                        colspan --;
                    }
                }
                else
                    column ++;

                if (get_attr(attrs, "COLSPAN", attr, sizeof(attr)) != NULL)
                    colspan = atoi(attr);
                else
                    colspan = 1;

//        printf("AFTER column = %d, colspan = %d, num_columns = %d\n",
//	       column, colspan, num_columns);

                if ((column + colspan) >= num_columns)
                    num_columns = column + colspan;

                needspace = 0;
                width     = 0;
                incell    = 1;

                if (strcasecmp(buf, "TH") == 0)
                    font = textfont_ | FL_BOLD;
                else
                    font = textfont_;

                fsize = textsize_;

                pushfont(font, fsize);

                if (get_attr(attrs, "WIDTH", attr, sizeof(attr)) != NULL)
                    max_width = get_length(attr);
                else
                    max_width = 0;

//        printf("max_width = %d\n", max_width);
            }
            else if (strcasecmp(buf, "/TD") == 0 ||
                     strcasecmp(buf, "/TH") == 0)
            {
                incell = 0;
                popfont(font, fsize, fcolor);
            }
            else if (strcasecmp(buf, "B") == 0 ||
                     strcasecmp(buf, "STRONG") == 0)
                pushfont(font |= FL_BOLD, fsize);
            else if (strcasecmp(buf, "I") == 0 ||
                     strcasecmp(buf, "EM") == 0)
                pushfont(font |= FL_ITALIC, fsize);
            else if (strcasecmp(buf, "CODE") == 0 ||
                     strcasecmp(buf, "TT") == 0)
                pushfont(font = FL_COURIER, fsize);
            else if (strcasecmp(buf, "KBD") == 0)
                pushfont(font = FL_COURIER_BOLD, fsize);
            else if (strcasecmp(buf, "VAR") == 0)
                pushfont(font = FL_COURIER_ITALIC, fsize);
            else if (strcasecmp(buf, "/B") == 0 ||
                     strcasecmp(buf, "/STRONG") == 0 ||
                     strcasecmp(buf, "/I") == 0 ||
                     strcasecmp(buf, "/EM") == 0 ||
                     strcasecmp(buf, "/CODE") == 0 ||
                     strcasecmp(buf, "/TT") == 0 ||
                     strcasecmp(buf, "/KBD") == 0 ||
                     strcasecmp(buf, "/VAR") == 0)
                popfont(font, fsize, fcolor);
            else if (strcasecmp(buf, "IMG") == 0 && incell)
            {
                Fl_Shared_Image	*img = 0;
                int		iwidth, iheight;


                get_attr(attrs, "WIDTH", wattr, sizeof(wattr));
                get_attr(attrs, "HEIGHT", hattr, sizeof(hattr));
                iwidth  = get_length(wattr);
                iheight = get_length(hattr);

                if (get_attr(attrs, "SRC", attr, sizeof(attr)))
                {
                    img     = get_image(attr, iwidth, iheight);
                    iwidth  = img->w();
                    iheight = img->h();
                }

                if (iwidth > minwidths[column])
                    minwidths[column] = iwidth;

                width += iwidth;
                if (needspace)
                    width += (int)fl_width(' ');

                if (width > max_width)
                    max_width = width;

                needspace = 0;
            }
        }
        else if (*ptr == '\n' && pre)
        {
            width     = 0;
            needspace = 0;
            ptr ++;
        }
        else if (isspace((*ptr)&255))
        {
            needspace = 1;

            ptr ++;
        }
        else if (*ptr == '&' && s < (buf + sizeof(buf) - 1))
        {
            ptr ++;

            int qch = quote_char(ptr);

            if (qch < 0)
                *s++ = '&';
            else
            {
//        int l;
//        l = fl_utf8encode((unsigned int) qch, s);
//        if (l < 1) l = 1;
//        s += l;
                *s++ = qch;
                ptr = strchr(ptr, ';') + 1;
            }
        }
        else
        {
            if (s < (buf + sizeof(buf) - 1))
                *s++ = *ptr++;
            else
                ptr ++;
        }
    }

    // Now that we have scanned the entire table, adjust the table and
    // cell widths to fit on the screen...
    if (get_attr(table + 6, "WIDTH", attr, sizeof(attr)))
        *table_width = get_length(attr);
    else
        *table_width = 0;

#ifdef DEBUG
    printf("num_columns = %d, table_width = %d\n", num_columns, *table_width);
#endif // DEBUG

    if (num_columns == 0)
        return;

    // Add up the widths...
    for (column = 0, width = 0; column < num_columns; column ++)
        width += columns[column];

#ifdef DEBUG
    printf("width = %d, w() = %d\n", width, w());
    for (column = 0; column < num_columns; column ++)
        printf("    columns[%d] = %d, minwidths[%d] = %d\n", column, columns[column],
               column, minwidths[column]);
#endif // DEBUG

    // Adjust the width if needed...
    int scale_width = *table_width;

    int scrollsize = scrollbar_size_ ? scrollbar_size_ : Fl::scrollbar_size();
    if (scale_width == 0)
    {
        if (width > (hsize_ - scrollsize)) scale_width = hsize_ - scrollsize;
        else scale_width = width;
    }

    if (width < scale_width)
    {
#ifdef DEBUG
        printf("Scaling table up to %d from %d...\n", scale_width, width);
#endif // DEBUG

        *table_width = 0;

        scale_width = (scale_width - width) / num_columns;

#ifdef DEBUG
        printf("adjusted scale_width = %d\n", scale_width);
#endif // DEBUG

        for (column = 0; column < num_columns; column ++)
        {
            columns[column] += scale_width;

            (*table_width) += columns[column];
        }
    }
    else if (width > scale_width)
    {
#ifdef DEBUG
        printf("Scaling table down to %d from %d...\n", scale_width, width);
#endif // DEBUG

        for (column = 0; column < num_columns; column ++)
        {
            width       -= minwidths[column];
            scale_width -= minwidths[column];
        }

#ifdef DEBUG
        printf("adjusted width = %d, scale_width = %d\n", width, scale_width);
#endif // DEBUG

        if (width > 0)
        {
            for (column = 0; column < num_columns; column ++)
            {
                columns[column] -= minwidths[column];
                columns[column] = scale_width * columns[column] / width;
                columns[column] += minwidths[column];
            }
        }

        *table_width = 0;
        for (column = 0; column < num_columns; column ++)
        {
            (*table_width) += columns[column];
        }
    }
    else if (*table_width == 0)
        *table_width = width;

#ifdef DEBUG
    printf("FINAL table_width = %d\n", *table_width);
    for (column = 0; column < num_columns; column ++)
        printf("    columns[%d] = %d\n", column, columns[column]);
#endif // DEBUG
}


/** Frees memory used for the document. */
void
Fl_Help_View::free_data()
{
    // Release all images...
    if (value_)
    {
        const char	*ptr,		// Pointer into block
        *attrs;		// Pointer to start of element attributes
        char	*s,		// Pointer into buffer
        buf[1024],	// Text buffer
        attr[1024],	// Attribute buffer
        wattr[1024],	// Width attribute buffer
        hattr[1024];	// Height attribute buffer

        for (ptr = value_; *ptr;)
        {
            if (*ptr == '<')
            {
                ptr ++;

                if (strncmp(ptr, "!--", 3) == 0)
                {
                    // Comment...
                    ptr += 3;
                    if ((ptr = strstr(ptr, "-->")) != NULL)
                    {
                        ptr += 3;
                        continue;
                    }
                    else
                        break;
                }

                s = buf;

                while (*ptr && *ptr != '>' && !isspace((*ptr)&255))
                    if (s < (buf + sizeof(buf) - 1))
                        *s++ = *ptr++;
                    else
                        ptr ++;

                *s = '\0';

                attrs = ptr;
                while (*ptr && *ptr != '>')
                    ptr ++;

                if (*ptr == '>')
                    ptr ++;

                if (strcasecmp(buf, "IMG") == 0)
                {
                    Fl_Shared_Image	*img;
                    int		width;
                    int		height;

                    get_attr(attrs, "WIDTH", wattr, sizeof(wattr));
                    get_attr(attrs, "HEIGHT", hattr, sizeof(hattr));
                    width  = get_length(wattr);
                    height = get_length(hattr);

                    if (get_attr(attrs, "SRC", attr, sizeof(attr)))
                    {
                        // Get and release the image to free it from memory...
                        img = get_image(attr, width, height);
                        if ((void*)img != &broken_image)
                        {
                            img->release();
                        }
                    }
                }
            }
            else
                ptr ++;
        }

        free((void *)value_);
        value_ = 0;
    }

    // Free all of the arrays...
    if (nblocks_)
    {
        free(blocks_);

        ablocks_ = 0;
        nblocks_ = 0;
        blocks_  = 0;
    }

    if (nlinks_)
    {
        free(links_);

        alinks_ = 0;
        nlinks_ = 0;
        links_  = 0;
    }

    if (ntargets_)
    {
        free(targets_);

        atargets_ = 0;
        ntargets_ = 0;
        targets_  = 0;
    }
}

/** Gets an alignment attribute. */
int					// O - Alignment
Fl_Help_View::get_align(const char *p,	// I - Pointer to start of attrs
                        int        a)	// I - Default alignment
{
    char	buf[255];			// Alignment value


    if (get_attr(p, "ALIGN", buf, sizeof(buf)) == NULL)
        return (a);

    if (strcasecmp(buf, "CENTER") == 0)
        return (CENTER);
    else if (strcasecmp(buf, "RIGHT") == 0)
        return (RIGHT);
    else
        return (LEFT);
}


/** Gets an attribute value from the string. */
const char *					// O - Pointer to buf or NULL
Fl_Help_View::get_attr(const char *p,		// I - Pointer to start of attributes
                       const char *n,		// I - Name of attribute
                       char       *buf,		// O - Buffer for attribute value
                       int        bufsize)	// I - Size of buffer
{
    char	name[255],				// Name from string
    *ptr,					// Pointer into name or value
    quote;					// Quote


    buf[0] = '\0';

    while (*p && *p != '>')
    {
        while (isspace((*p)&255))
            p ++;

        if (*p == '>' || !*p)
            return (NULL);

        for (ptr = name; *p && !isspace((*p)&255) && *p != '=' && *p != '>';)
            if (ptr < (name + sizeof(name) - 1))
                *ptr++ = *p++;
            else
                p ++;

        *ptr = '\0';

        if (isspace((*p)&255) || !*p || *p == '>')
            buf[0] = '\0';
        else
        {
            if (*p == '=')
                p ++;

            for (ptr = buf; *p && !isspace((*p)&255) && *p != '>';)
                if (*p == '\'' || *p == '\"')
                {
                    quote = *p++;

                    while (*p && *p != quote)
                        if ((ptr - buf + 1) < bufsize)
                            *ptr++ = *p++;
                        else
                            p ++;

                    if (*p == quote)
                        p ++;
                }
                else if ((ptr - buf + 1) < bufsize)
                    *ptr++ = *p++;
                else
                    p ++;

            *ptr = '\0';
        }

        if (strcasecmp(n, name) == 0)
            return (buf);
        else
            buf[0] = '\0';

        if (*p == '>')
            return (NULL);
    }

    return (NULL);
}


/** Gets a color attribute. */
Fl_Color				// O - Color value
Fl_Help_View::get_color(const char *n,	// I - Color name
                        Fl_Color   c)	// I - Default color value
{
    int	i;				// Looping var
    int	rgb, r, g, b;			// RGB values
    static const struct  			// Color name table
    {
        const char *name;
        int r, g, b;
    }	colors[] =
    {
        { "black",		0x00, 0x00, 0x00 },
        { "red",		0xff, 0x00, 0x00 },
        { "green",		0x00, 0x80, 0x00 },
        { "yellow",		0xff, 0xff, 0x00 },
        { "blue",		0x00, 0x00, 0xff },
        { "magenta",	0xff, 0x00, 0xff },
        { "fuchsia",	0xff, 0x00, 0xff },
        { "cyan",		0x00, 0xff, 0xff },
        { "aqua",		0x00, 0xff, 0xff },
        { "white",		0xff, 0xff, 0xff },
        { "gray",		0x80, 0x80, 0x80 },
        { "grey",		0x80, 0x80, 0x80 },
        { "lime",		0x00, 0xff, 0x00 },
        { "maroon",		0x80, 0x00, 0x00 },
        { "navy",		0x00, 0x00, 0x80 },
        { "olive",		0x80, 0x80, 0x00 },
        { "purple",		0x80, 0x00, 0x80 },
        { "silver",		0xc0, 0xc0, 0xc0 },
        { "teal",		0x00, 0x80, 0x80 }
    };


    if (!n || !n[0]) return c;

    if (n[0] == '#')
    {
        // Do hex color lookup
        rgb = strtol(n + 1, NULL, 16);

        if (strlen(n) > 4)
        {
            r = rgb >> 16;
            g = (rgb >> 8) & 255;
            b = rgb & 255;
        }
        else
        {
            r = (rgb >> 8) * 17;
            g = ((rgb >> 4) & 15) * 17;
            b = (rgb & 15) * 17;
        }
        return (fl_rgb_color((uchar)r, (uchar)g, (uchar)b));
    }
    else
    {
        for (i = 0; i < (int)(sizeof(colors) / sizeof(colors[0])); i ++)
            if (!strcasecmp(n, colors[i].name))
            {
                return fl_rgb_color(colors[i].r, colors[i].g, colors[i].b);
            }
        return c;
    }
}


/** Gets an inline image.

  The image reference count is maintained accordingly, such that
  the image can be released exactly once when the document is closed.

  \return a pointer to a cached Fl_Shared_Image, if the image can be loaded,
  	  otherwise a pointer to an internal Fl_Pixmap (broken_image).

  \todo Fl_Help_View::get_image() returns a pointer to the internal
  Fl_Pixmap broken_image, but this is _not_ compatible with the
  return type Fl_Shared_Image (release() must not be called).
*/

/* Implementation note: (A.S. Apr 05, 2009)

  Fl_Help_View::get_image() uses a static global flag (initial_load)
  to determine, if it is called from the initial loading of a document
  (load() or value()), or from resize() or draw().

  A better solution would be to manage all loaded images in an own
  structure like Fl_Help_Target (Fl_Help_Image ?) to avoid using this
  global flag, but this would break the ABI !

  This should be fixed in FLTK 1.3 !


  If initial_load is true, then Fl_Shared_Image::get() is called to
  load the image, and the reference count of the shared image is
  increased by one.

  If initial_load is false, then Fl_Shared_Image::find() is called to
  load the image, and the image is released immediately. This avoids
  increasing the reference count when calling get_image() from draw()
  or resize().

  Calling Fl_Shared_Image::find() instead of Fl_Shared_Image::get() avoids
  doing unnecessary i/o for "broken images" within each resize/redraw.

  Each image must be released exactly once in the destructor or before
  a new document is loaded: see free_data().
*/

Fl_Shared_Image *
Fl_Help_View::get_image(const char *name, int W, int H)
{
    const char	*localname;		// Local filename
    char		dir[1024];		// Current directory
    char		temp[1024],		// Temporary filename
    *tempptr;		// Pointer into temporary name
    Fl_Shared_Image *ip;			// Image pointer...

    // See if the image can be found...
    if (strchr(directory_, ':') != NULL && strchr(name, ':') == NULL)
    {
        if (name[0] == '/')
        {
            strlcpy(temp, directory_, sizeof(temp));

            if ((tempptr = strrchr(strchr(directory_, ':') + 3, '/')) != NULL)
            {
                strlcpy(tempptr, name, sizeof(temp) - (tempptr - temp));
            }
            else
            {
                strlcat(temp, name, sizeof(temp));
            }
        }
        else
        {
            snprintf(temp, sizeof(temp), "%s/%s", directory_, name);
        }

        if (link_) localname = (*link_)(this, temp);
        else localname = temp;
    }
    else if (name[0] != '/' && strchr(name, ':') == NULL)
    {
        if (directory_[0]) snprintf(temp, sizeof(temp), "%s/%s", directory_, name);
        else
        {
            fl_getcwd(dir, sizeof(dir));
            snprintf(temp, sizeof(temp), "file:%s/%s", dir, name);
        }

        if (link_) localname = (*link_)(this, temp);
        else localname = temp;
    }
    else if (link_) localname = (*link_)(this, name);
    else localname = name;

    if (!localname) return 0;

    if (strncmp(localname, "file:", 5) == 0) localname += 5;

    if (initial_load)
    {
        if ((ip = Fl_Shared_Image::get(localname, W, H)) == NULL)
        {
            ip = (Fl_Shared_Image *)&broken_image;
        }
    }
    else   // draw or resize
    {
        if ((ip = Fl_Shared_Image::find(localname, W, H)) == NULL)
        {
            ip = (Fl_Shared_Image *)&broken_image;
        }
        else
        {
            ip->release();
        }
    }

    return ip;
}


/** Gets a length value, either absolute or %. */
int
Fl_Help_View::get_length(const char *l)  	// I - Value
{
    int	val;					// Integer value

    if (!l[0]) return 0;

    val = atoi(l);
    if (l[strlen(l) - 1] == '%')
    {
        if (val > 100) val = 100;
        else if (val < 0) val = 0;

        int scrollsize = scrollbar_size_ ? scrollbar_size_ : Fl::scrollbar_size();
        val = val * (hsize_ - scrollsize) / 100;
    }

    return val;
}


Fl_Help_Link *Fl_Help_View::find_link(int xx, int yy)
{
    int		i;
    Fl_Help_Link	*linkp;
    for (i = nlinks_, linkp = links_; i > 0; i --, linkp ++)
    {
        if (xx >= linkp->x && xx < linkp->w &&
                yy >= linkp->y && yy < linkp->h)
            break;
    }
    return i ? linkp : 0L;
}

void Fl_Help_View::follow_link(Fl_Help_Link *linkp)
{
    char		target[32];	// Current target

    clear_selection();

    strlcpy(target, linkp->name, sizeof(target));

    set_changed();

    if (strcmp(linkp->filename, filename_) != 0 && linkp->filename[0])
    {
        char	dir[1024];	// Current directory
        char	temp[1024],	// Temporary filename
        *tempptr;	// Pointer into temporary filename


        if (strchr(directory_, ':') != NULL &&
                strchr(linkp->filename, ':') == NULL)
        {
            if (linkp->filename[0] == '/')
            {
                strlcpy(temp, directory_, sizeof(temp));
                if ((tempptr = strrchr(strchr(directory_, ':') + 3, '/')) != NULL)
                    strlcpy(tempptr, linkp->filename, sizeof(temp));
                else
                    strlcat(temp, linkp->filename, sizeof(temp));
            }
            else
                snprintf(temp, sizeof(temp), "%s/%s", directory_, linkp->filename);
        }
        else if (linkp->filename[0] != '/' && strchr(linkp->filename, ':') == NULL)
        {
            if (directory_[0])
                snprintf(temp, sizeof(temp), "%s/%s", directory_, linkp->filename);
            else
            {
                fl_getcwd(dir, sizeof(dir));
                snprintf(temp, sizeof(temp), "file:%s/%s", dir, linkp->filename);
            }
        }
        else
            strlcpy(temp, linkp->filename, sizeof(temp));

        if (linkp->name[0])
            snprintf(temp + strlen(temp), sizeof(temp) - strlen(temp), "#%s",
                     linkp->name);

        load(temp);
    }
    else if (target[0])
        topline(target);
    else
        topline(0);

    leftline(0);
}

/** Removes the current text selection. */
void Fl_Help_View::clear_selection()
{
    if (current_view==this)
        clear_global_selection();
}
/** Selects all the text in the view. */
void Fl_Help_View::select_all()
{
    clear_global_selection();
    if (!value_) return;
    current_view = this;
    selection_drag_last = selection_last = strlen(value_);
    selected = 1;
}

void Fl_Help_View::clear_global_selection()
{
    if (selected) redraw();
    selection_push_first = selection_push_last = 0;
    selection_drag_first = selection_drag_last = 0;
    selection_first = selection_last = 0;
    selected = 0;
}

char Fl_Help_View::begin_selection()
{
    clear_global_selection();

    if (!fl_help_view_buffer) fl_help_view_buffer = fl_create_offscreen(1, 1);

    mouse_x = Fl::event_x();
    mouse_y = Fl::event_y();
    draw_mode = 1;

    current_view = this;
    fl_begin_offscreen(fl_help_view_buffer);
    draw();
    fl_end_offscreen();

    draw_mode = 0;

    if (selection_push_last) return 1;
    else return 0;
}

char Fl_Help_View::extend_selection()
{
    if (Fl::event_is_click())
        return 0;

//  printf("old selection_first=%d, selection_last=%d\n",
//         selection_first, selection_last);

    int sf = selection_first, sl = selection_last;

    selected = 1;
    mouse_x = Fl::event_x();
    mouse_y = Fl::event_y();
    draw_mode = 2;

    fl_begin_offscreen(fl_help_view_buffer);
    draw();
    fl_end_offscreen();

    draw_mode = 0;

    if (selection_push_first < selection_drag_first)
    {
        selection_first = selection_push_first;
    }
    else
    {
        selection_first = selection_drag_first;
    }

    if (selection_push_last > selection_drag_last)
    {
        selection_last = selection_push_last;
    }
    else
    {
        selection_last = selection_drag_last;
    }

//  printf("new selection_first=%d, selection_last=%d\n",
//         selection_first, selection_last);

    if (sf!=selection_first || sl!=selection_last)
    {
//    puts("REDRAW!!!\n");
        return 1;
    }
    else
    {
//    puts("");
        return 0;
    }
}

// convert a command with up to four letters into an unsigned int
static unsigned int command(const char *cmd)
{
    unsigned int ret = (tolower(cmd[0])<<24);
    char c = cmd[1];
    if (c=='>' || c==' ' || c==0) return ret;
    ret |= (tolower(c)<<16);
    c = cmd[2];
    if (c=='>' || c==' ' || c==0) return ret;
    ret |= (tolower(c)<<8);
    c = cmd[3];
    if (c=='>' || c==' ' || c==0) return ret;
    ret |= tolower(c);
    c = cmd[4];
    if (c=='>' || c==' ' || c==0) return ret;
    return 0;
}

#define CMD(a, b, c, d) ((a<<24)|(b<<16)|(c<<8)|d)

void Fl_Help_View::end_selection(int clipboard)
{
    if (!selected || current_view!=this)
        return;
    // convert the select part of our html text into some kind of somewhat readable ASCII
    // and store it in the selection buffer
    char p = 0, pre = 0;;
    int len = strlen(value_);
    char *txt = (char*)malloc(len+1), *d = txt;
    const char *s = value_, *cmd, *src;
    for (;;)
    {
        char c = *s++;
        if (c==0) break;
        if (c=='<')   // begin of some html command. Skip until we find a '>'
        {
            cmd = s;
            for (;;)
            {
                c = *s++;
                if (c==0 || c=='>') break;
            }
            if (c==0) break;
            // do something with this command... .
            // the replacement string must not be longer that the command itself plus '<' and '>'
            src = 0;
            switch (command(cmd))
            {
            case CMD('p','r','e', 0 ): pre = 1;
                break;
            case CMD('/','p','r','e'): pre = 0;
                break;
            case CMD('t','d', 0 , 0 ):
                        case CMD('p', 0 , 0 , 0 ):
                            case CMD('/','p', 0 , 0 ):
                                case CMD('b','r', 0 , 0 ): src = "\n";
                break;
            case CMD('l','i', 0 , 0 ): src = "\n * ";
                break;
            case CMD('/','h','1', 0 ):
                        case CMD('/','h','2', 0 ):
                            case CMD('/','h','3', 0 ):
                                case CMD('/','h','4', 0 ):
                                    case CMD('/','h','5', 0 ):
                                        case CMD('/','h','6', 0 ): src = "\n\n";
                break;
            case CMD('t','r', 0 , 0 ):
                        case CMD('h','1', 0 , 0 ):
                            case CMD('h','2', 0 , 0 ):
                                case CMD('h','3', 0 , 0 ):
                                    case CMD('h','4', 0 , 0 ):
                                        case CMD('h','5', 0 , 0 ):
                                            case CMD('h','6', 0 , 0 ): src = "\n\n";
                break;
            case CMD('d','t', 0 , 0 ): src = "\n ";
                break;
            case CMD('d','d', 0 , 0 ): src = "\n - ";
                break;
            }
            int n = s-value_;
            if (src && n>selection_first && n<=selection_last)
    {
                while (*src)
                {
                    *d++ = *src++;
                }
                c = src[-1];
                p = isspace(c&255) ? ' ' : c;
            }
            continue;
        }
        if (c=='&')   // special characters
        {
            int xx = quote_char(s);
            if (xx>=0)
            {
                c = (char)xx;
                for (;;)
                {
                    char cc = *s++;
                    if (!cc || cc==';') break;
                }
            }
        }
        int n = s-value_;
        if (n>selection_first && n<=selection_last)
        {
            if (!pre && isspace(c&255)) c = ' ';
            if (p!=' '||c!=' ')
                *d++ = c;
            p = c;
        }
    }
    *d = 0;
    Fl::copy(txt, strlen(txt), clipboard);
    free(txt);
}

#define ctrl(x) ((x)&0x1f)

/** Handles events in the widget. */
int				// O - 1 if we handled it, 0 otherwise
Fl_Help_View::handle(int event)	// I - Event to handle
{
    static Fl_Help_Link *linkp;   // currently clicked link

    int xx = Fl::event_x() - x() + leftline_;
    int yy = Fl::event_y() - y() + topline_;

    switch (event)
    {
    case FL_FOCUS:
        redraw();
        return 1;
    case FL_UNFOCUS:
        clear_selection();
        redraw();
        return 1;
    case FL_ENTER :
        Fl_Group::handle(event);
        return 1;
    case FL_LEAVE :
        fl_cursor(FL_CURSOR_DEFAULT);
        break;
    case FL_MOVE:
        if (find_link(xx, yy)) fl_cursor(FL_CURSOR_HAND);
        else fl_cursor(FL_CURSOR_DEFAULT);
        return 1;
    case FL_PUSH:
        if (Fl_Group::handle(event)) return 1;
        linkp = find_link(xx, yy);
        if (linkp)
        {
            fl_cursor(FL_CURSOR_HAND);
            return 1;
        }
        if (begin_selection())
        {
            fl_cursor(FL_CURSOR_INSERT);
            return 1;
        }
        fl_cursor(FL_CURSOR_DEFAULT);
        return 1;
    case FL_DRAG:
        if (linkp)
        {
            if (Fl::event_is_click())
            {
                fl_cursor(FL_CURSOR_HAND);
            }
            else
            {
                fl_cursor(FL_CURSOR_DEFAULT); // should be "FL_CURSOR_CANCEL" if we had it
            }
            return 1;
        }
        if (current_view==this && selection_push_last)
        {
            if (extend_selection()) redraw();
            fl_cursor(FL_CURSOR_INSERT);
            return 1;
        }
        fl_cursor(FL_CURSOR_DEFAULT);
        return 1;
    case FL_RELEASE:
        if (linkp)
        {
            if (Fl::event_is_click())
            {
                follow_link(linkp);
            }
            fl_cursor(FL_CURSOR_DEFAULT);
            linkp = 0;
            return 1;
        }
        if (current_view==this && selection_push_last)
        {
            end_selection();
            return 1;
        }
        return 1;
    case FL_SHORTCUT:
    {
        char ascii = Fl::event_text()[0];
        switch (ascii)
        {
        case ctrl('A'): select_all();
            redraw();
            return 1;
        case ctrl('C'):
                    case ctrl('X'): end_selection(1);
            return 1;
        }
        break;
    }
    }
    return (Fl_Group::handle(event));
}

/**
  The constructor creates the Fl_Help_View widget at the specified
  position and size.
*/
Fl_Help_View::Fl_Help_View(int        xx,	// I - Left position
                           int        yy,	// I - Top position
                           int        ww,	// I - Width in pixels
                           int        hh,	// I - Height in pixels
                           const char *l)
        : Fl_Group(xx, yy, ww, hh, l),
        scrollbar_(xx + ww - Fl::scrollbar_size(), yy,
                   Fl::scrollbar_size(), hh - Fl::scrollbar_size()),
        hscrollbar_(xx, yy + hh - Fl::scrollbar_size(),
                    ww - Fl::scrollbar_size(), Fl::scrollbar_size())
{
    color(FL_BACKGROUND2_COLOR, FL_SELECTION_COLOR);

    title_[0]     = '\0';
    defcolor_     = FL_FOREGROUND_COLOR;
    bgcolor_      = FL_BACKGROUND_COLOR;
    textcolor_    = FL_FOREGROUND_COLOR;
    linkcolor_    = FL_SELECTION_COLOR;
    textfont_     = FL_TIMES;
    textsize_     = 12;
    value_        = NULL;

    ablocks_      = 0;
    nblocks_      = 0;
    blocks_       = (Fl_Help_Block *)0;

    link_         = (Fl_Help_Func *)0;

    alinks_       = 0;
    nlinks_       = 0;
    links_        = (Fl_Help_Link *)0;

    atargets_     = 0;
    ntargets_     = 0;
    targets_      = (Fl_Help_Target *)0;

    directory_[0] = '\0';
    filename_[0]  = '\0';

    topline_      = 0;
    leftline_     = 0;
    size_         = 0;
    hsize_        = 0;
    scrollbar_size_ = 0;

    scrollbar_.value(0, hh, 0, 1);
    scrollbar_.step(8.0);
    scrollbar_.show();
    scrollbar_.callback(scrollbar_callback);

    hscrollbar_.value(0, ww, 0, 1);
    hscrollbar_.step(8.0);
    hscrollbar_.show();
    hscrollbar_.callback(hscrollbar_callback);
    hscrollbar_.type(FL_HORIZONTAL);
    end();

    resize(xx, yy, ww, hh);
}


/** Destroys the Fl_Help_View widget.

  The destructor destroys the widget and frees all memory that has been
  allocated for the current document.
*/
Fl_Help_View::~Fl_Help_View()
{
    clear_selection();
    free_data();
}


/** Loads the specified file.

  This method loads the specified file or URL.
*/
int				// O - 0 on success, -1 on error
Fl_Help_View::load(const char *f)// I - Filename to load (may also have target)
{
    FILE		*fp;		// File to read from
    long		len;		// Length of file
    char		*target;	// Target in file
    char		*slash;		// Directory separator
    const char	*localname;	// Local filename
    char		error[1024];	// Error buffer
    char		newname[1024];	// New filename buffer

    // printf("load(%s)\n",f); fflush(stdout);

    if (strncmp(f, "ftp:", 4) == 0 ||
            strncmp(f, "http:", 5) == 0 ||
            strncmp(f, "https:", 6) == 0 ||
            strncmp(f, "ipp:", 4) == 0 ||
            strncmp(f, "mailto:", 7) == 0 ||
            strncmp(f, "news:", 5) == 0)
    {
        char urimsg[256];
        if ( fl_open_uri(f, urimsg, sizeof(urimsg)) == 0 )
        {
            clear_selection();

            strlcpy(newname, f, sizeof(newname));
            if ((target = strrchr(newname, '#')) != NULL)
                *target++ = '\0';

            if (link_)
                localname = (*link_)(this, newname);
            else
                localname = filename_;

            if (!localname)
                return (0);

            free_data();

            strlcpy(filename_, newname, sizeof(filename_));
            strlcpy(directory_, newname, sizeof(directory_));

            // Note: We do not support Windows backslashes, since they are illegal
            //       in URLs...
            if ((slash = strrchr(directory_, '/')) == NULL)
                directory_[0] = '\0';
            else if (slash > directory_ && slash[-1] != '/')
                *slash = '\0';

            snprintf(error, sizeof(error),
                     "<HTML><HEAD><TITLE>Error</TITLE></HEAD>"
                     "<BODY><H1>Error</H1>"
                     "<P>Unable to follow the link \"%s\" - "
                     "%s.</P></BODY>",
                     f, urimsg);
            value(error);
            //return(-1);
        }
        return(0);
    }

    clear_selection();

    strlcpy(newname, f, sizeof(newname));
    if ((target = strrchr(newname, '#')) != NULL)
        *target++ = '\0';

    if (link_)
        localname = (*link_)(this, newname);
    else
        localname = filename_;

    if (!localname)
        return (0);

    free_data();

    strlcpy(filename_, newname, sizeof(filename_));
    strlcpy(directory_, newname, sizeof(directory_));

    // Note: We do not support Windows backslashes, since they are illegal
    //       in URLs...
    if ((slash = strrchr(directory_, '/')) == NULL)
        directory_[0] = '\0';
    else if (slash > directory_ && slash[-1] != '/')
        *slash = '\0';

    if (strncmp(localname, "file:", 5) == 0)
        localname += 5;	// Adjust for local filename...

    if ((fp = fl_fopen(localname, "rb")) != NULL)
    {
        fseek(fp, 0, SEEK_END);
        len = ftell(fp);
        rewind(fp);

        value_ = (const char *)calloc(len + 1, 1);
        fread((void *)value_, 1, len, fp);
        fclose(fp);
    }
    else
    {
        snprintf(error, sizeof(error),
                 "<HTML><HEAD><TITLE>Error</TITLE></HEAD>"
                 "<BODY><H1>Error</H1>"
                 "<P>Unable to follow the link \"%s\" - "
                 "%s.</P></BODY>",
                 localname, strerror(errno));
        value_ = strdup(error);
    }

    initial_load = 1;
    format();
    initial_load = 0;

    if (target)
        topline(target);
    else
        topline(0);

    return (0);
}


/** Resizes the help widget. */

void
Fl_Help_View::resize(int xx,	// I - New left position
                     int yy,	// I - New top position
                     int ww,	// I - New width
                     int hh)	// I - New height
{
    Fl_Boxtype		b = box() ? box() : FL_DOWN_BOX;
    // Box to draw...


    Fl_Widget::resize(xx, yy, ww, hh);

    int scrollsize = scrollbar_size_ ? scrollbar_size_ : Fl::scrollbar_size();
    scrollbar_.resize(x() + w() - scrollsize - Fl::box_dw(b) + Fl::box_dx(b),
                      y() + Fl::box_dy(b), scrollsize, h() - scrollsize - Fl::box_dh(b));
    hscrollbar_.resize(x() + Fl::box_dx(b),
                       y() + h() - scrollsize - Fl::box_dh(b) + Fl::box_dy(b),
                       w() - scrollsize - Fl::box_dw(b), scrollsize);

    format();
}


/** Scrolls the text to the indicated position, given a named destination.

  \param[in] n target name
*/
void
Fl_Help_View::topline(const char *n)	// I - Target name
{
    Fl_Help_Target key,			// Target name key
    *target;		// Pointer to matching target


    if (ntargets_ == 0)
        return;

    strlcpy(key.name, n, sizeof(key.name));

    target = (Fl_Help_Target *)bsearch(&key, targets_, ntargets_, sizeof(Fl_Help_Target),
                                       (compare_func_t)compare_targets);

    if (target != NULL)
        topline(target->y);
}


/** Scrolls the text to the indicated position, given a pixel line.

  If the given pixel value \p top is out of range, then the text is
  scrolled to the top or bottom of the document, resp.

  \param[in] top top line number in pixels (0 = start of document)
*/
void
Fl_Help_View::topline(int top)	// I - Top line number
{
    if (!value_)
        return;

    int scrollsize = scrollbar_size_ ? scrollbar_size_ : Fl::scrollbar_size();
    if (size_ < (h() - scrollsize) || top < 0)
        top = 0;
    else if (top > size_)
        top = size_;

    topline_ = top;

    scrollbar_.value(topline_, h() - scrollsize, 0, size_);

    do_callback();

    redraw();
}


/** Scrolls the text to the indicated position, given a pixel column.

  If the given pixel value \p left is out of range, then the text is
  scrolled to the left or right side of the document, resp.

  \param[in] left left column number in pixels (0 = left side)
*/
void
Fl_Help_View::leftline(int left)	// I - Left position
{
    if (!value_)
        return;

    int scrollsize = scrollbar_size_ ? scrollbar_size_ : Fl::scrollbar_size();
    if (hsize_ < (w() - scrollsize) || left < 0)
        left = 0;
    else if (left > hsize_)
        left = hsize_;

    leftline_ = left;

    hscrollbar_.value(leftline_, w() - scrollsize, 0, hsize_);

    redraw();
}


/** Sets the current help text buffer to the string provided and reformats the text.

  The provided character string \p val is copied internally and will be
  freed when value() is called again, or when the widget is destroyed.

  If \p val is NULL, then the widget is cleared.
*/
void
Fl_Help_View::value(const char *val)	// I - Text to view
{
    clear_selection();
    free_data();
    set_changed();

    if (!val)
        return;

    value_ = strdup(val);

    initial_load = 1;
    format();
    initial_load = 0;

    topline(0);
    leftline(0);
}


#ifdef ENC
# undef ENC
#endif
// part b in the table seems to be mac_roman - beku
# define ENC(a, b) a


/** Returns the character code associated with a quoted char. */
static int			// O - Code or -1 on error
quote_char(const char *p)  	// I - Quoted string
{
    int	i;			// Looping var
    static struct
    {
        const char	*name;
        int		namelen;
        int		code;
    }	*nameptr,		// Pointer into name array
    names[] =  		// Quoting names
    {
        { "Aacute;", 7, ENC(193,231) },
        { "aacute;", 7, ENC(225,135) },
        { "Acirc;",  6, ENC(194,229) },
        { "acirc;",  6, ENC(226,137) },
        { "acute;",  6, ENC(180,171) },
        { "AElig;",  6, ENC(198,174) },
        { "aelig;",  6, ENC(230,190) },
        { "Agrave;", 7, ENC(192,203) },
        { "agrave;", 7, ENC(224,136) },
        { "amp;",    4, ENC('&','&') },
        { "Aring;",  6, ENC(197,129) },
        { "aring;",  6, ENC(229,140) },
        { "Atilde;", 7, ENC(195,204) },
        { "atilde;", 7, ENC(227,139) },
        { "Auml;",   5, ENC(196,128) },
        { "auml;",   5, ENC(228,138) },
        { "brvbar;", 7, ENC(166, -1) },
        { "bull;",   5, ENC(149,165) },
        { "Ccedil;", 7, ENC(199,199) },
        { "ccedil;", 7, ENC(231,141) },
        { "cedil;",  6, ENC(184,252) },
        { "cent;",   5, ENC(162,162) },
        { "copy;",   5, ENC(169,169) },
        { "curren;", 7, ENC(164, -1) },
        { "deg;",    4, ENC(176,161) },
        { "divide;", 7, ENC(247,214) },
        { "Eacute;", 7, ENC(201,131) },
        { "eacute;", 7, ENC(233,142) },
        { "Ecirc;",  6, ENC(202,230) },
        { "ecirc;",  6, ENC(234,144) },
        { "Egrave;", 7, ENC(200,233) },
        { "egrave;", 7, ENC(232,143) },
        { "ETH;",    4, ENC(208, -1) },
        { "eth;",    4, ENC(240, -1) },
        { "Euml;",   5, ENC(203,232) },
        { "euml;",   5, ENC(235,145) },
        { "euro;",   5, ENC(128,219) },
        { "frac12;", 7, ENC(189, -1) },
        { "frac14;", 7, ENC(188, -1) },
        { "frac34;", 7, ENC(190, -1) },
        { "gt;",     3, ENC('>','>') },
        { "Iacute;", 7, ENC(205,234) },
        { "iacute;", 7, ENC(237,146) },
        { "Icirc;",  6, ENC(206,235) },
        { "icirc;",  6, ENC(238,148) },
        { "iexcl;",  6, ENC(161,193) },
        { "Igrave;", 7, ENC(204,237) },
        { "igrave;", 7, ENC(236,147) },
        { "iquest;", 7, ENC(191,192) },
        { "Iuml;",   5, ENC(207,236) },
        { "iuml;",   5, ENC(239,149) },
        { "laquo;",  6, ENC(171,199) },
        { "lt;",     3, ENC('<','<') },
        { "macr;",   5, ENC(175,248) },
        { "micro;",  6, ENC(181,181) },
        { "middot;", 7, ENC(183,225) },
        { "nbsp;",   5, ENC(' ',' ') },
        { "not;",    4, ENC(172,194) },
        { "Ntilde;", 7, ENC(209,132) },
        { "ntilde;", 7, ENC(241,150) },
        { "Oacute;", 7, ENC(211,238) },
        { "oacute;", 7, ENC(243,151) },
        { "Ocirc;",  6, ENC(212,239) },
        { "ocirc;",  6, ENC(244,153) },
        { "Ograve;", 7, ENC(210,241) },
        { "ograve;", 7, ENC(242,152) },
        { "ordf;",   5, ENC(170,187) },
        { "ordm;",   5, ENC(186,188) },
        { "Oslash;", 7, ENC(216,175) },
        { "oslash;", 7, ENC(248,191) },
        { "Otilde;", 7, ENC(213,205) },
        { "otilde;", 7, ENC(245,155) },
        { "Ouml;",   5, ENC(214,133) },
        { "ouml;",   5, ENC(246,154) },
        { "para;",   5, ENC(182,166) },
        { "premil;", 7, ENC(137,228) },
        { "plusmn;", 7, ENC(177,177) },
        { "pound;",  6, ENC(163,163) },
        { "quot;",   5, ENC('\"','\"') },
        { "raquo;",  6, ENC(187,200) },
        { "reg;",    4, ENC(174,168) },
        { "sect;",   5, ENC(167,164) },
        { "shy;",    4, ENC(173,'-') },
        { "sup1;",   5, ENC(185, -1) },
        { "sup2;",   5, ENC(178, -1) },
        { "sup3;",   5, ENC(179, -1) },
        { "szlig;",  6, ENC(223,167) },
        { "THORN;",  6, ENC(222, -1) },
        { "thorn;",  6, ENC(254, -1) },
        { "times;",  6, ENC(215,'x') },
        { "trade;",  6, ENC(153,170) },
        { "Uacute;", 7, ENC(218,242) },
        { "uacute;", 7, ENC(250,156) },
        { "Ucirc;",  6, ENC(219,243) },
        { "ucirc;",  6, ENC(251,158) },
        { "Ugrave;", 7, ENC(217,244) },
        { "ugrave;", 7, ENC(249,157) },
        { "uml;",    4, ENC(168,172) },
        { "Uuml;",   5, ENC(220,134) },
        { "uuml;",   5, ENC(252,159) },
        { "Yacute;", 7, ENC(221, -1) },
        { "yacute;", 7, ENC(253, -1) },
        { "yen;",    4, ENC(165,180) },
        { "Yuml;",   5, ENC(159,217) },
        { "yuml;",   5, ENC(255,216) }
    };

    if (!strchr(p, ';')) return -1;
    if (*p == '#')
    {
        if (*(p+1) == 'x' || *(p+1) == 'X') return strtol(p+2, NULL, 16);
        else return atoi(p+1);
    }
    for (i = (int)(sizeof(names) / sizeof(names[0])), nameptr = names; i > 0; i --, nameptr ++)
        if (strncmp(p, nameptr->name, nameptr->namelen) == 0)
            return nameptr->code;

    return -1;
}


/** The vertical scrollbar callback. */
static void
scrollbar_callback(Fl_Widget *s, void *)
{
    ((Fl_Help_View *)(s->parent()))->topline(int(((Fl_Scrollbar*)s)->value()));
}


/** The horizontal scrollbar callback. */
static void
hscrollbar_callback(Fl_Widget *s, void *)
{
    ((Fl_Help_View *)(s->parent()))->leftline(int(((Fl_Scrollbar*)s)->value()));
}


//
// End of "$Id: Fl_Help_View.cxx 6776 2009-04-22 09:02:13Z greg.ercolano $".
//
